• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
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    • 专利摘要:
    Containers suitable for use in anaerobic products such as sealants and adhesives that cure, set up or polymerize in the absence of air are described. Containers having at least one wall made of deformable and oxygen permeable material that define a cavity for containing and retaining anaerobic products are flexible. The wall may be made of polyethylene or polypropylene.
    公开号:KR20010013669A
    申请号:KR1019997011681
    申请日:1998-07-03
    公开日:2001-02-26
    发明作者:크램프톤알란；고돈퍼갈안토니；브라이언힐라리
    申请人:록타이트(알 앤 디) 리미티드；
    IPC主号:
    专利说明:

    Container for anaerobic products {A CONTAINER FOR ANAEROBIC PRODUCTS}
    [2] As used herein, anaerobic product refers to an agent that is cured and set up or polymerized in the absence of air.
    [3] EP 0 352 143 describes anaerobic liquid acrylate sealant compositions. US 4 180 640 (Loctite) describes curable adhesives and sealing compositions. US 3 218 305 (Krieble) discloses anaerobic sealing compositions. US 2 895 950 and US 3 046 262 (Krieble) also disclose anaerobic compositions. The products described in these specifications are examples of the types of products that may be stored in the containers of the present invention.
    [4] Containers or boxes for storage of anaerobic adhesives and sealant products are known. Typically such containers may be made of plastic and have substantially rigid walls and may hold several liters of anaerobic products. Larger containers with spouts are only suitable for low viscosity products. High viscosity products are not easily transferred to other bottles. It is known to provide semi-rigid containers for such products. High viscosity products may be dispensed from the container by compression by hand.
    [5] Rigid and semi-rigid containers are used with automatic dispensing devices. They do not easily conform to the shape of the dispenser and thus form a bag of confined (and therefore not dispensed) product in the dispensing device. High viscosity products adhere to the vessel wall even when the vessel is pressurized, leaving a significant amount of product in the vessel and then wasting or otherwise removed from the vessel. Another disadvantage of such containers is the shelf life of the products and especially anaerobic products in such containers, when the containers are filled to some level. Anaerobic vessels usually leave a gap above the level of liquid in the vessel. Depending on the strength of the side walls of the container to give it a sufficient shelf life, typically 30% to 60% of the volume inside the container is not filled with anaerobic products. This allows a sufficient volume of air (oxygen) remaining in the container to stabilize the anaerobic product. But there is a conflict between the need to seal the product on the one hand and the need for air (oxygen) to spread through the product on the other. When filled or nearly full, such containers do not provide a commercially acceptable shelf life for anaerobic products because there is not enough air (oxygen) in the containers and they do not supply enough oxygen in the containers. As a result, partial filling of the container with this product is a significant waste of packaging material and expensive.
    [6] Containers made of air permeable material allow air to pass through walls and the like. This air may replace air at the septum in the container or may be supplied to the product. However, in order to ensure the stability of anaerobic products, it is not enough to secure sufficient shelf life just by dissemination within the gap. Air should be supplied to the product to ensure that no curing, set-up or polymerization takes place. The area where hardening, set-up or polymerization is most likely to occur is the center of the product population. Thus, even in air permeable vessels and spaced air in the vessel, hardening or set-up or polymerization may occur, giving the product a shorter shelf life than desired. The problem of curing or set-up is exacerbated by an increase in storage temperature. It is known to refrigerate some anaerobic products, especially those of high viscosity, which are sensitive to polymerization, curing or set-up, in order to prevent untimely curing, for example at temperatures of 2-8 ° C. Temperatures greater than about 28-30 ° C. cause curing or set-up of anaerobic products much faster.
    [7] An example of such a container is one commonly referred to as a "cubitainer" (commercially available from Dynopack, UK). The name derives from its three-dimensional form. The vessel is made of a conventional transparent plastic made from low density polyethylene / ethylene vinyl acetate (LLDPE / EVA) copolymer mixed with linear low density polyethylene (LLDPE) with a wall thickness of about 160 μm to 180 μm. The nozzle with the screw cap is fitted in the center of the top wall of the container. Typically cubic containers have an internal volume of 3 liters and are used to hold 1 liter or 2 liters of anaerobic adhesive. The smaller the anaerobic nature of the adhesive placed on the cubic container, the longer the shelf life of the adhesive.
    [8] The cubic container has a continuous bonded seam that extends around the exterior of the container. The seam extends along one side of the bottom wall, then obliquely crosses the first side wall, then across one side of the top wall, then obliquely descends the second side wall opposite the first side wall to meet the bottom wall To form a continuous seam.
    [9] Although the contents can be dispensed by hand by squeezing the walls of the container to some extent, the container is relatively rigid. However, users of cubitainers have found that significant amounts of low to high viscosity products remain in the container despite hand pressurization, requiring the container to be cut and opened to remove its contents. The cubic container is packaged in an outer cardboard box that allows it to be stacked and prevents physical damage to the plastic walls. The oxygen permeability of the cubic container at a wall thickness of 20 ° C. and 350 μm is about 553 cm 3 / m 2 day bar (546 cm 3 / m 2 day atm).
    [10] When partially filled, cubic containers provide a storage means for anaerobic containers which give the product a good shelf life. However, partially filled vessels as described above are wasteful of material and energy. Of course it is possible to fill the cubic container completely, but it is not actually filled and compromises the shelf life of the product. Moreover, cubic retainers are only suitable for low to medium viscosity products, not for medium to high viscosity products, because of their “hard to pour” nature. High viscosity products are traditionally sold in "covered bucket" containers, ie containers with very wide openings (and therefore large), allowing the product to be manually removed from the container.
    [11] The vessels described above are all “independent” vessels, ie the strength of the side walls, is sufficient to allow the vessel to stand undeformed or to any significant degree under internal pressure from its contents. It is necessary to follow the base area-to-height ratio that stabilizes the container when standing to make an independent container. The cubic container described above is packaged in a cardboard box to prevent damage during transportation, storage and the like. The cubic container is an independent container and allows its solid shape and relatively rigid sidewalls to stand on the base.
    [12] Another type of container used for high viscosity anaerobic products is a cartridge having a nozzle and a built-in piston, in which the product is dispensed by a dispensing gun or the like. There is no thickness left in the cartridge. This severely limits the shelf life of the product. Moreover, the amount placed in this cartridge is relatively small, in the order of 300 ml to 800 ml. The larger the volume, the shorter the shelf life of the product.
    [13] Collapsible containers suitable for the use of medicaments or other liquids to be protected from contamination are known from EP-A-0172711. And EP-A-0590465 relates to hybrid membrane barriers for the packaging of oxygen sensitive products. These containers are not suitable for use in anaerobic products that cure or polymerize in the absence of air (oxygen) by preventing air from entering the interior of the container.
    [14] Hybrid membranes for bag-in-box type containers are known from JP-A-07 701 002-A (see Derwent Abstract: Accession No. 95-182607 [24]). Such membranes are made from an extremely low density polyethylene or an outer layer of linear low density polyethylene with an intermediate gas barrier layer. The gas barrier layer may be a polyamide resin layer, a hydrolyzed ethylene-vinyl acetate copolymer layer and a polyamide resin layer or alternatively a polyamide resin layer, a polyolefin adhesive resin layer and a hydrolyzed ethylene-vinyl acetate copolymer layer. . The outer and middle layers are joined by an adhesive resin. Membranes are described as having good gas barrier properties and are therefore useful for the storage of foodstuffs and chemicals.
    [15] Similar products are known from US-4 863 770, US-4 851 272 and US-4 778 699, all of which are believed to have good oxygen or gas permeation barriers.
    [16] Anaerobic products in the form of containers described above are commercially available for some time. Therefore containers for anaerobic products:
    [17] (Iii) impart good shelf life stability to anaerobic products;
    [18] (Ii) may be used to store either low, medium or high viscosity products so that the product can be dispensed by hand without difficulty or automatically dispensed from a dispensing instrument and filled to a level where the thickness in the container is minimized. May; and
    [19] (Iii) Prevents anaerobic products from leaking out of the container, but does not penetrate the air and penetrate into the container, i.e., does not provide a substantial barrier to air penetration.
    [20] It is necessary to provide.
    [21] Typically the minimum spacing does not exceed the volume of the nozzle / cap. However, achieving a gap smaller than 20% of the container will be appreciated as a significant improvement over prior art containers when the shelf life of the product is not yielded by the minimum gap.
    [22] Summary of the Invention
    [23] The present invention provides a flexible container for an anaerobic product, comprising at least one wall defining a cavity for storing and retaining the anaerobic product, a wall made of deformable oxygen permeable material, into which the container may be placed. Make sure that it is flexible enough to substantially match the shape of another container.
    [24] The flexible container may be made of one thin layer or thin layers of oxygen permeable material such as polyethylene or polypropylene and formed into the shape of a bag. Suitable materials are linear low density polyethylene, very low density polyethylene, high density polyethylene or polypropylene or mixtures, coextrusions or laminates of these products. The flexible container may consist of two or more layers of oxygen permeable material. The wall thickness may be at least 50 μm and the permeability of the wall is more than 25 cm 3 / m 2 day bar. Flexible containers may be opaque. This is required if the product is light sensitive.
    [25] In another aspect, the present invention provides a pack comprising a flexible and rigid container. The flexible container may be provided in an external substantially rigid oxygen permeable container that can accommodate the flexible container when the anaerobic product is included and can hold the flexible container in a predetermined form during use. The outer container holds the flexible container in an optimal state to allow oxygen to replenish the anaerobic product. This gives a good shelf life while the container in which the adhesive is stored is flexible and the product can be easily dispensed. The product may be poured or dispensed regardless of its viscosity.
    [26] The low viscosity anaerobic product contained in the flexible container may be dispensed without removing the flexible container from the outer container once the outer carton is so fitted. In particular, the flexible container may have a nozzle that may be opened or closed to dispense the contents of the flexible container.
    [27] In one aspect of the invention, the flexible container comprises a plastic bag and the outer container consists essentially of a cardboard box of rigid body. The cardboard box may be made of cardboard, or may be flat or in the form of a flatpack. In other words, one dimension of the pack may be smaller than two significantly different dimensions, for example the width and the depth may be greater than the height. Suitably, in use, the outer container holds the flexible container in the form of a population of anaerobic products, in a form such that the distance from any point of the product to the wall is no more than 4 cm.
    [1] The present invention relates to anaerobic products, in particular anaerobic sealants and adhesives, in particular containers for liquid products. Anaerobic adhesives and sealants are cured and set up or polymerized in the absence of oxygen (air).
    [28] 1 is a perspective view of a flexible container of the present invention.
    [29] FIG. 2 is an enlarged partial cross-sectional view of the flexible container of FIG. 1. FIG.
    [30] 3 is a perspective view of the outer container for the flexible container of FIG. 1.
    [31] 4 is a cross-sectional view of the flexible container of FIG. 1 filled and encased in the outer container of FIG. 3.
    [32] Detailed description of the drawings
    [33] The flexible container of the present invention will now be described with reference to FIGS.
    [34] The flexible container is generally represented by (1).
    [35] The flexible container 1 drawn therein as shown from FIG. 1 is rectangular in shape. The flexible container 1 is made of thin layers of oxygen permeable material, which may be, for example, linear low density polyethylene (LLDPE). LLDPE is air / oxygen permeable. The flexible container 1 has two opposing walls: a first wall 2 and a second wall 3; each wall formed from two layers of LLDPE. The junction or seam 4 extends around the periphery of the flexible container 1 at a short distance from its edge. The splice 4 is joined together with the walls 2, 3 to form a sealed bag shape. The flexible container 1 also has a nozzle or spout 8 attached to the first wall 2. The flange 7 (see FIG. 4) under the wall 2 supports the nozzle 8. The flange 7 seals and runs to the first wall 2 by a joint 24 around the flange. The flange 7 and the nozzle 8 are formed in a single part. The nozzle 8 is equipped with a threaded stopper or cap 10 which is used to hold the product in the flexible container 1 when the flexible container receives the product. When empty, the plastic container 1 is flat in the shape of FIG. 1. It is generally rectangular in shape. It will be appreciated that the wall of any given container may comprise one or more layers. The single layer may comprise one or more plies of material. Most preferred materials are plastic materials, in particular polyethylene or polypropylene. Each wall / layer or ply may be a laminate, coextruded product or mixed product.
    [36] FIG. 2 shows a side view of the flexible container of FIG. 1. In particular it can be observed that the first wall 2 comprises two layers 5, 6 of the LLDPE membrane and the second wall 3 also comprises two layers 11, 12. The layers of the first wall 2 and the layers 11, 12 of the second wall 3 are held together only by the junction 4. In particular the layers 5, 6 of the first wall 2 are not joined or sealed together on the surface part. The same applies to the layers 11 and 12 of the second wall 3.
    [37] 3 shows a perspective view of an outer container or box 9 made of cardboard. The container 9 has a base 13, two side walls 14, 15 and two end walls 16, 17. The container 9 has a lid 18 composed of two hinge portions 19, 20. The lid 18 can move between a closed state and an open state. The container 9 has two other end-folded edges 21, 22 which serve to hold the lid 18 in the closed state. Another rim (not shown) can be used to hold the lid in the closed state. The inner height of the outer container shall be no greater than 80 mm, preferably no greater than 60 mm. In the described embodiment, the inner height is about 50 mm. Other dimensions of the container 9 are determined by the flexible container 1 because the outer container 9 is adapted to accommodate a full or nearly full flexible container 1. The flexible container 1 fits comfortably into the outer container 9 when filled with anaerobic products. The flexible container 1 and the outer container 9 may be of any required form. Suitably they have a complementary form. The bottom wall of the flexible container 1 fits into the container 9 and in particular rests on the base 13. The flexible container 1 is then pressurized by two perimeters when the outer container 9 is in the closed form: first by the inner periphery with respect to the width of the outer container 9 and second by the inner periphery with respect to the length of the container. Do. The flexible container 1 fits this dimension within a tolerance of up to 10 mm smaller than the corresponding dimension of the container. The expansion of the flexible container 1 is prevented by the outer container 9 which makes the product in the flexible container 1 evenly distributed.
    [38] A flexible container 1 filled with anaerobic product and placed in an outer container 9 (now closed) is shown in FIG. 4. The two layers 5, 6 on the top wall 2 and the bottom wall 3 trap any anaerobic product which may bleed out from the internal cavity of the container 1 between the layers of each wall. .
    [39] Known packaging provides a high barrier to air (oxygen) permeability while the flexible container 1 of the present invention provides a low barrier.
    [40] The outer container 9 holds the flexible container 1 in the form shown in FIG. 4. The flexible container 1 is suppressed by the inner height of the outer container 9 in height. That is, the upper wall 2 of the flexible cardboard box 1 is restrained by the lid 18 while the lower wall 2 of the flexible container 1 is restrained and supported by the base 13. The flexible container 1 can not exceed the inner height of the outer container 9 between the lid 18 and the base 13 in height. The end walls 16, 17 of the outer container 9 fit snugly against the ends of the flexible container 1 and hold the flexible container 1 against movement during transport. Without the outer container 9 the container 1 may be folded, crimped or otherwise deformed during transport or storage. The outer container 9 generally provides a rectangular box form, which prevents this and can also be easily stacked and stored. Since the distance from the walls (2), (3) to any point in the product is relatively short, it has a relatively large surface area and is flexible to supply oxygen to all the populations of anaerobic products 23 in the flexible container 1 The container 1 is generally kept flat. The flat form may also be commonly referred to as the "flatpack" form. The flexible container 1 thus maintains an optimal exposed surface area for oxygen supply to the flexible container 1.
    [41] The outer container 9 need not be made of an oxygen permeable material. It may also be made of an impermeable material that allows air into the interior of the container, for example by providing small holes or the like in the container. The outer container 9 may also be designed to have a plurality of flexible containers 1. Each flexible container 1 may be separated from others by a partition that may be oxygen permeable. Alternatively, the flexible container 1 may be accommodated in an arrangement arranged apart by other means.
    [42] The flexible container 1 takes the form of a pressurized port dispenser that is put into it. This allows the anaerobic product (low to high viscosity) to be dispensed without direct contact between the anaerobic product and the user. Anaerobic products with low to medium viscosities can also be followed without removing the flexible container 1 from the outer container 9. The high viscosity anaerobic product may be compressed by hand from the flexible container 1 or dispensed as described above. The flexible container 1 may be removed from the outer container 9 before dispensing the product.
    [43] The disclosure, International Patent Application No., expressly incorporated herein by reference to the flexible container 1; It may also be used with the pressurized port dispenser described in PCT / IE97 / 00015.
    [44] The container 1 can in particular be designed to fit comfortably in any of several pressurized port dispensers. In general, when filled with the product, the periphery of the flexible container 1 can be made to almost match the internal dimensions of the circular cavity of any pressurized port dispenser. Since the nozzle 8 is designed to be held by the collar of the pressurized port dispenser, the dispensing nozzle can penetrate the cap and remove anaerobic products from the flexible container 1 without having to remove the cap 10 from the flexible container 1. Can squeeze out.
    [45] It will be noted that the flexible container 1 is sufficiently flexible to conform to the shape of the container in which it is placed if the container has dimensions that limit the shape of the flexible container 1 in some way. For example, the outer container 9 limits the height of the flexible container 1, and the pressurized port dispenser may have a circular cavity that conforms the flexible container 1 to a generally circular shape, at least in cross section. . Furthermore, the flexible container 1 may be folded, for example by folding on itself by means of a pressure piston in the pressure port. Substantially all of the anaerobic adhesive 23 can thus be dispensed from the flexible container 1.
    [46] The flexible container 1 of the present invention may be of any type as long as it holds the flat pack form described above. In particular the population of flexible containers and / or adhesives should have a height / width / length of at least one dimension not greater than about 8 cm. If the height of the container does not exceed 8 cm is usually convenient.
    [47] A suitable method for calculating an approximation in which one dimension of the vessel is limited is:
    [48] Limit value = 5/9 (volume of flexible container) 1/3
    [49] (Ie calculate 5/9 of the cube root of volume (cm 3) and take this number as a limited dimension, for example height (cm)).
    [50] The flexible container 1 may have a side wall having a thickness of 50 μm or more. The side wall may include many layers or plies, at least one of which is at least 50 μm in thickness. In the illustrated embodiment the flexible container 1 has two plies of 70 μm thick each.
    [51] The flexible container 1 may contain other volumes of product and still have minimal spacing. Due to the flexible nature of the flexible container 1, it will be appreciated that the thickness can be minimized at any full level of product. Since air may be squeezed out of the flexible container 1, only the thickness of the internal volume of the nozzle 8 remains effective.
    [52] When referring to the nominal volume of the flexible container 1, this is considered to be the desired minimum full amount of the flexible container 1 (the minimum full amount is required for manufacturing purposes). The flexible container 1 may have an internal volume exceeding the nominal volume, especially when the shape of the flexible container 1 is not suppressed and the sides may be inflated when filled. The outer container 9 has a direct relationship with the nominal volume of the flexible container 1 to force the flexible container 1 to a given dimension.
    [53] In combination with the restraining force of the outer container 9 and the internal pressure of the anaerobic product (due to the volume present), the flexible container 1 is combined in the present invention and, in use, has a square sheet with respect to the flexible container 1. By providing the shape of the shape, the flexible container 1 does not fold to some extent or fold over itself. Compared to the nominal volume, the degree of overfilling can be controlled. The term 'gap' refers to the internal volume of a container that is not occupied by the product but is usually occupied by air. The flexible container 1 may be opaque, translucent or transparent. If anaerobic products are photosensitive, they may be opaque.
    [54] The following examples are provided solely for purposes of illustration and are not intended to limit the teachings as described.
    [55] The following abbreviations are used in the following examples:
    [56] PE = polyethylene
    [57] HDPE = high density polyethylene
    [58] LLDPE = linear low density polyethylene
    [59] VLDPE = very low density polyethylene
    [60] “CUBIC” = cubicontainer product described above (initial volume 3L)
    [61] “5LHDPE” = rectangular shape, natural HDPE bottle of 5 liter capacity of about 1 mm thick
    [62] “Black HDPE” = black, round shape, wall about 1 mm thick and a HDPE bottle with a capacity of 1.75 liters.
    [63] “Red” = red, oval shaped, approximately 1 mm thick wall and 400 ml LDPE bottle. The oxygen permeability of the 'red container' is 150 cm 3 / m 2 .day.bar.
    [64] “Natural LDPE” = 1.75 liter LDPE bottles of natural, circular shape, approximately 1 mm thick.
    [65] “LDPE Bag” = 70 μm LDLD bags made of two layers of LLDPE (natural), with a capacity of 2 liters (equivalent to flexible container 1).
    [66] The term "natural" refers to a colorless product, that is, a natural color product without any dye applied.
    [67] Example 1: Dimensions of the Flexible Container 1
    [68] Example 1 (a) An example of typical dimensions of the flexible container 1 and its outer container 9 is given below.
    [69] Fabrication: The upper and lower walls, each two layers, were formed in the form of a rectangle and joined with a 6 mm bond. In each case the outer ply consists of PE / HDPE / PE (code A057 / 1) and the inner ply consists of LLDPE (70 μm).
    [70] Length and width were measured from the inner junction to the inner junction.
    [71] Dimension of flexible container (1):
    [72] Length (cm): 27.5-28.5 Width (cm): 24.5-25.5
    [73] Nominal volume: 2
    [74] Distance from inner joint to nozzle center: 4.5 to 5.5 cm from end: 12.3 to 12.7 cm from side
    [75] Dimensions of the outer container (9):
    [76] Internal length (cm): 25.5 Internal width (cm): 32
    [77] Internal Height (cm): 19.0 Wall Thickness (cm): 0.3
    [78] Example 1 (b): Examples of typical dimensions of the flexible container 1 and the outer container 9 are given below.
    [79] Fabrication: The upper and lower walls, each two ply, are formed in the form of a rectangle and joined with a 6 mm glue. In each case the outer layer is LLDPE (transparent) of 70 μm membrane. In each case, the inner ply is LLDPE (transparent) of 70 μm membrane (this flexible container 1 is code A057 / 3).
    [80] Dimension of flexible container (1):
    [81] Length and width were measured from the inner junction to the inner junction.
    [82] Length (cm): 33.5 ± 0.5 Width (cm): 20.0 ± 0.5
    [83] Nominal volume: 2
    [84] Distance from inner junction to center of nozzle: from end (cm): 5.0 ± 0.5 from side (cm): 10.0 ± 0.5
    [85] Dimensions of the outer container (9):
    [86] Inner length (cm): 37.5 Inner width (cm): 14.0
    [87] Internal Height (cm): 5.0 Wall Thickness (cm): 10.3
    [88] Example 2: Oxygen Permeability of Materials That May Be Used to Fabricate Flexible Container 1
    [89] Test material: Specimen D (code A057 / 3): Transparent 70 μm VLDPE / LLDPE mixture
    [90] Specimen E (Code A057 / 1): Transparent HDPE / LLDPE Coextrusion
    [91] Test conditions: 23 ± 1 ° C, 50 ± 2% rh (relative humidity)
    [92] Test Methods
    [93] ASTM D3985-81, Coulometry method using a computer controlled Oxtran 2/22 instrument.
    [94] Each specimen is allowed to form a gap between the two chambers. Both chambers were initially flushed with carrier gas. When steady state was established, it was flushed through the upper chamber with oxygen. The sensor was activated to detect oxygen spread through the specimen and measured over several hours until the system reached equilibrium and eventually remained unchanged. The specimens were tested for 1% oxygen in nitrogen and the results were cited in 100 replicates of oxygen, 4 replicates per specimen.
    [95] Oxygen permeability (cm 3 / m 2 day atm)
    [96] Average range
    [97] Psalm D (Code A057 / 3) 2728 2586-2848
    [98] Psalm E (Code A057 / 1) 1494 1446-1544
    [99] Example 3 (a): Performance and stability tests of Loctite Product No. 121078. Product 121078 is an anaerobic single component with an adhesive based on urethane methacrylate monomer.
    [100] One liter of product 121078 is stored at room temperature in a three liter flexible container 1 having a wall made of two layers of natural LLDPE 70 μm. The flexible container 1 imitates three liters of cubic containers filled with one liter by expanding two liters.
    [101] After heat treatment at 45 ° C. for 4.5 months or 3 months, the flexible container 1 behaved similarly to a cubiter.
    [102] Example 3 (b): Loctite product No. 121078: was heat aged at 55 ° C, 45 ° C and 35 ° C and the product 5LHDPE (2 liters 121078), Black HDPE (1 liter 121078), Cubic (1 liter 121078) ), With the enumerated amounts of red (250 ml) and flexible containers (2 liter fill) in natural LDPE (1 liter 121078), are each stored at room temperature in the following containers. The performance of the product stored in a 2-liter flexible container (same as above) was similar to that of a product in a 3-liter cubic container filled with 1 liter (and again filled with 2 liters of air) and stored in another container. It was superior to the performance of. Failure of the test is believed to result in a significant increase in the viscosity of the product and / or a partial (lump) or complete gelation of the product.
    [103] For specimens thermally aged at 55 ° C., the cubiter and flexible container 1 outperformed other containers containing at least 1 liter of product. The gelation time of the product was about 7 times that of the other containers and had a performance similar to the above 'red' container containing only 250 ml of product. The performance of cubic containers and flexible containers at 45 ° C. exceeds eight times those of other containers containing at least 1 liter, giving a product gelation time similar to that of a 'red' container. At 35 [deg.] C., without testing being completed, cubic containers and flexible containers had three times the performance of other containers containing at least 1 liter and had a performance similar to a 'red' container.
    [104] Example 4
    [105] Pin and collar tests were used to determine the shear strength of the adhesive joint of the adhesive between the metal pin and the metal collar. Pin and collar tests are standard tests in this industry.
    [106] Viscosity is determined by conventional methods using Brookfield RVT using suitable spindles at two different settings of revolutions per minute. Viscosity testing on Brookfield RVT is a standard test.
    [107] The weight loss percentage of the product was also determined. Viscosity pin and color (P & C) tests and weight tests were all used to determine the storage characteristics of the containers by testing the performance of anaerobic products that were heated or aged at room temperature (22 ° C. in the vessel).
    [108] The series of Loctite (Ireland) products listed below are two different 2-liter flexible containers—that of Example 1 (a) and 1 (b), (2 liter fill-thickness of the air of the nozzle 8). Amount, respectively). Cubtainers were used as a criterion to judge the performance of these products when thermally aged at 45 ° C. for 7 weeks and 35 ° C. for 14 weeks. Viscosity measurements, pin and color tests, and weight loss of the product were used for comparative testing between the product stored in the cubic container and the product stored under the same conditions in each of the flexible containers (1). Product No. For 275 and 242, torque strength is required to loosen coarse threaded nuts and bolts when held together by product ('BONO' test) instead of pin and collar test. The cubic container was placed in a standard paper cardboard box during each test. The flexible containers are stored side by side in a cardboard box for convenience.
    [109] The products tested were as follows:
    [110]
    [111]
    [112] All of these products are available from Loctite, Dublin, Ireland under the given product reference numbers. Such products include low, medium and high viscosity products.
    [113] The term low viscosity is defined as a material of 0-1000 Cps.
    [114] The term, medium viscosity, is defined as a material of 1,000-10,000 Cps.
    [115] The term high viscosity is defined as a material of 10,00-3,000,000 Cps. These viscosity ranges are based on viscosity measurements taken at lower rpm numbers for Brookfield RVT testing and testing.
    [116] result
    [117] The test results are described in the following nine tables.
    [118]
    [119]
    [120]
    [121]
    [122]
    [123]
    [124]
    [125]
    [126]
    [127] Summary of results
    [128] For all of these products the cubic container and flexible container showed similar performance for all the tests conducted. In individual testing, one of the flexible containers outperformed the other and / or cubic container.
    [129] The overall storage capacity of flexible containers and cubic containers appears to be similar.
    权利要求:
    Claims (15)
    [1" claim-type="Currently amended] Substantially conform to the form of the other container which is made of deformable and oxygen permeable material and which can be placed in at least one other container, including at least one wall defining a cavity for the receipt and retention of anaerobic products A flexible container for anaerobic products, characterized by having sufficient flexibility.
    [2" claim-type="Currently amended] The method according to claim 1, characterized in that the walls are made of polyethylene or polypropylene, especially linear low density polyethylene, very low density polyethylene, high density polyethylene or polypropylene or mixtures, coextrusions or laminates thereof. Container made with.
    [3" claim-type="Currently amended] The container of claim 1 or 2, wherein the wall is deformable and comprises two or more layers of oxygen permeable material.
    [4" claim-type="Currently amended] The container of claim 1, wherein the wall thickness is at least 50 μm.
    [5" claim-type="Currently amended] The container according to any one of the preceding claims, characterized in that the permeability of the walls of the container is at least 25 cm 3 / m 2 .day.bar.
    [6" claim-type="Currently amended] 6. A container according to any one of claims 1 to 5, wherein the flexible container is opaque.
    [7" claim-type="Currently amended] The container according to claim 1, wherein the anaerobic product is an adhesive or a sealant.
    [8" claim-type="Currently amended] (a) substantially in the form of another container that is made of deformable, oxygen permeable material and that includes at least one wall that defines a cavity for receipt and retention of anaerobic products and that can be placed in at least one other container; A flexible container for an anaerobic product, characterized in that it is flexible enough to conform; And
    (b) an external substantially rigid container adapted to receive a flexible container.
    [9" claim-type="Currently amended] The pack of claim 8 wherein the rigid container is oxygen permeable.
    [10" claim-type="Currently amended] 10. The pack according to claim 8 or 9, wherein the rigid container comprises a cardboard box.
    [11" claim-type="Currently amended] The pack according to claim 8, wherein the cardboard box is in the form of a flat pack.
    [12" claim-type="Currently amended] The pack according to any one of claims 8 to 11, wherein the flexible container is opaque.
    [13" claim-type="Currently amended] 13. Pack according to any of claims 8 to 12, wherein the anaerobic product is an adhesive or sealant.
    [14" claim-type="Currently amended] The method according to any one of claims 8 to 13, wherein during use the outer container comprises a flexible container, when the collection of anaerobic products, the distance from any point of the product to the wall of the flexible container is 4 cm or less. Pack according to the form.
    [15" claim-type="Currently amended] The pack as claimed in claim 8, comprising the flexible container according to claim 1.
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    同族专利:
    公开号 | 公开日
    JP2002507955A|2002-03-12|
    ES2190086T3|2003-07-16|
    US6502697B1|2003-01-07|
    EP0994814B1|2003-02-05|
    RU2223210C2|2004-02-10|
    DE69811232T2|2003-11-20|
    EP0994814A1|2000-04-26|
    KR100536881B1|2005-12-16|
    AU8238998A|1999-02-08|
    BR9810268A|2000-09-12|
    CN1261853A|2000-08-02|
    WO1999002424A1|1999-01-21|
    DE69811232D1|2003-03-13|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    1997-07-07|Priority to IE970507
    1997-07-07|Priority to IE970507
    1998-07-03|Application filed by 록타이트(알 앤 디) 리미티드
    1998-07-03|Priority to PCT/IE1998/000057
    2001-02-26|Publication of KR20010013669A
    2005-12-16|Application granted
    2005-12-16|Publication of KR100536881B1
    优先权:
    申请号 | 申请日 | 专利标题
    IE970507|1997-07-07|
    IE970507|1997-07-07|
    PCT/IE1998/000057|WO1999002424A1|1997-07-07|1998-07-03|A container for anaerobic products|
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