CN1144544C - Loop fastening material - Google Patents
Loop fastening material Download PDFInfo
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- CN1144544C CN1144544C CNB00805455XA CN00805455A CN1144544C CN 1144544 C CN1144544 C CN 1144544C CN B00805455X A CNB00805455X A CN B00805455XA CN 00805455 A CN00805455 A CN 00805455A CN 1144544 C CN1144544 C CN 1144544C
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- China
- Prior art keywords
- looped pile
- fastening material
- loop
- layer
- loop fastening
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Classifications
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- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
- A44B18/00—Fasteners of the touch-and-close type; Making such fasteners
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- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
- A44B18/00—Fasteners of the touch-and-close type; Making such fasteners
- A44B18/0003—Fastener constructions
- A44B18/0011—Female or loop elements
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- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
- A44B18/00—Fasteners of the touch-and-close type; Making such fasteners
- A44B18/0046—Fasteners made integrally of plastics
- A44B18/0057—Female or loop elements
Abstract
The present invention provides a loop fastening material usable as the loop portion of a hook and loop fastener, the loop fastening material comprising in order: (1) a loop layer comprising (a) a multiplicity of flexible loops of fibers having a denier of less than 15 and adapted to be releasably engaged by the complementary hook portion of the hook and loop fastener, and (b) a backing layer in which the flexible loops are anchored; and (2) a pressure sensitive adhesive layer characterised in that the loop layer comprises a silicone release composition including a reaction product of a curable composition of (i) a polydialkylsiloxane having acrylate and/or methacrylate groups and (ii) an organic compound free of silicon and comprising at least two reactive groups selected from the group consisting of an acrylate and a methacrylate group.
Description
FIELD OF THE INVENTION
The present invention relates to a kind of loop fastening material that can be used as the looped pile part of hook and looped pile hasp, on first first type surface of described hasp, terry loop layer is arranged, on second first type surface pressure sensitive adhesive layer is arranged.The present invention is specifically related to a kind of loop fastening material, and wherein terry loop layer has specific polysiloxanes to peel off component.The invention still further relates to the manufacture method of loop fastening material and the sub-assembly of this loop fastening material.This loop fastening material is particularly useful for making for example diaper of absorbing products, therefore, the present invention also relates to comprise the absorbent article of this loop fastening material.
The background of invention
The known sheet material that many loop material are arranged, these sheet materials can be cut into small pieces and comprise the hook of dismountable type and the looped pile part of looped pile hasp class partly with formation.This loop material sheet generally comprises backing and many by being fixed in the machine-direction oriented polymer fiber looped pile in the backing and making and can mesh with looped pile with the hook on the hook portion of this fastener member with getting loose from the ridge of the front surface of backing.Can comprise that conventional woven or knitting technology makes this loop material sheet by many methods.Described among the United States Patent (USP) № 4609581 and 4770917 looped pile has been sewed up loop material sheet in the backing.
United States Patent (USP) № 5256231 has described such loop fastening material, and its production cost is lower than above-mentioned loop material, and has good character attractive in appearance.The described loop fastening material of this patent is made in the following manner: nonwoven web or substantially parallel a series of yarns is wrinkling in wrinkling folder, subsequently thermoplastic film is extruded the particular fixed part that is adhered to wrinkling fibre material sheets.Use below 25 dawn, the fiber at preferred 1-10 dawn just can be made extremely cheap and looped pile structure efficiently, and the Unit Weight of loop material is 5-300g/m
2Such loop material especially is suitable for limited hook of the number of times that links closely and get loose and the interior looped pile part of looped pile closed system, for example as the absorbent article of diaper.
When plan is used for making disposable absorbent article for example during diaper, loop fastening material comprises successively that usually (1) constitutes the terry loop layer of its first first type surface, this terry loop layer comprises that (a) is many and is suitable in hook and loop fastening with the removable lining flexible fiber looped pile of hook portion and (b) is fixed with the back sheet of flexible fiber looped pile in it; (2) pressure sensitive adhesive layer of second first type surface of formation loop fastening material.The loop fastening material that provides generally is the sub-assembly of the many loop fastening material sheets that are laminated to another top or the coiled material that self is rolled into the loop fastening material sheet.For fear of staining terry loop layer, peeling liner can served as a contrast between terry loop layer and the adhesive phase at this sub-assembly inner binder layer.But this can cause additional waste, makes the more expensive shortcoming of this sub-assembly.
EP693889 has disclosed a kind of sub-assembly of loop fastening material, it comprises that one or more layers is suitable for the sheet material of the loop fastening material of the looped pile part of making hook and looped pile fastener member, wherein said loop fastening material successively, comprise: the terry loop layer on (1) described material first first type surface, this material comprises (a) many being suitable for and be fixed with the basic unit of looped pile and the pressure sensitive adhesive layer on (2) this material second first type surface with the removable lining flexible looped pile of hook portion with (b) in hook and looped pile fastener member.In the sub-assembly of this european patent application, the adhesive phase on the top of loop fastening material directly contacts with the terry loop layer of the bottom of loop fastening material, make when the top of loop fastening material when sub-assembly takes off, the looped pile of bottom is in the engagement attitude.In order to make looped pile be in the engagement attitude, EP693889 thinks, is necessary to control the cohesive between looped pile and the pressure sensitive adhesive layer.Apply terry loop layer according to european patent application with release agent and can realize this control.As described in EP250248, exemplary release agent comprises the polysiloxane-polyurea segmented copolymers of reactive siloxane, looped pile oxygen siloxanes and radiation-hardenable.
Though such sub-assembly provides cost lower and waste less advantage, but find especially for low dawn numerical example should to improve the globality of looped pile and to reduce the adhesive phase that fiber is stained the top loop fastening material as 12 or the loop fastening material of the terry loop layer of following flexible looped pile.
United States Patent (USP) № 4696854 has disclosed the porous dual layer nonwoven base material of organic polymer layers and curing silicone resin bed.Apply hydrophilic natural or synthetic contact adhesive on organic polymer layers, just can make self can rolled-up adhesive tape.Equally, US4871611 relates to as medical nonwoven adhesive tape.This United States Patent (USP) has disclosed the one side that applies nonwoven substrates with the polysiloxane resin composition of radiation-hardenable, hardening composition under the condition of avoiding substantially infiltrating in the non-woven backing, in fact this exemplary coating composition contains 100% polyorganosiloxane resin.The preferred silicone resin of US4871611 comprises the polydialkysiloxane of (methyl) acroleic acid esterification, for example available from the TEGO of Goldschmidt AG
TMSiliconeAcrylates RC-149, RC-300, RC-450 and RC 802.
WO88/7931 relates to release coating, and it contains 1-30% (weight) and is scattered in reactive siloxane in 99-70% (weight) reaction resin as decentralized photo.Exemplary reactive siloxane comprise have acrylic groups, the dimethyl silicone polymer of sulfydryl or looped pile oxidative ethane group.This reaction resin comprise have can with the reactive oligomers of the functional group of reactive siloxane reaction.This release coating can be coated on paper or the polymer film to make for example label.
WO95/23694 relates to a kind of silicone release coating, and it contains the mixture of the siloxanes of two kinds of different (methyl) acroleic acid esterifications.Exemplary reactive siloxane comprises the trade name TEGO available from Goldschmidt AG
TMRC is available from the siloxanes of Goldschmidt Chemical Corp..As with an example of a kind of siloxanes of RC-705 combination, concrete disclose TEGO arranged
TMRC-726 is as an example of second kind of siloxanes.The described silicone release coating of this application can also be chosen wantonly and contain reactive oligomers, for example the polyol of acroleic acid esterification or methacrylated.
WO96/5962 has disclosed the silicone release coating of radiation-hardenable, and it contains the mixture of list (methyl) acrylate of the siloxanes of two kinds of different (methyl) acroleic acid esterifications and particular chemical formula.Exemplary siloxanes comprises available from the RC-726 of Goldschmidt Chemical Corp. and RC-708 with available from the SL5030 of GE Silicones.Also can in stripping composition, add for example polyol of acroleic acid esterification or methacrylated of reactive oligomers.This application points out that also this release coating can be applied on the various base materials that comprise paper, polyvinyl film, PVC film, polyester film, polyolefin film, glass, steel, aluminium and supatex fabric.
US5562992 has disclosed the silicone release composition of radiation-hardenable, and it contains the silicone resin of 2-7% (methyl) acroleic acid esterification and the organic polyhydroxy compound or the polyamino compound of 90-98% acroleic acid esterification or methacrylated.Exemplary siloxanes comprises RC450, RC450N, RC706, RC707, RC710, RC720 and RC726, and all are all available from Goldschmidt Chemical Corp..It is reported that this release coating can be used on the various base materials, comprise paper, polyvinyl film, PVC film, polyester film, polyolefin film, glass, steel, aluminium and supatex fabric.
The general introduction of invention
The invention provides a kind of loop fastening material that can be used as the looped pile part of hook and looped pile fastener member, this loop fastening material comprises successively: (1) terry loop layer, this terry loop layer comprises that (a) is many to be suitable in hook and looped pile fastener that removable lining and dawn number preferably is not more than 12 flexible fiber looped pile less than 15 with hook portion, (b) back sheet, flexible looped pile is fixing within it; (2) pressure sensitive adhesive layer, this layer are positioned on back sheet and the surface surface opposite that contains flexible looped pile; It is characterized in that described terry loop layer contains the polysiloxane stripping composition, said composition comprises (i) and has the polydialkysiloxane of acrylate and/or methacrylate based group and (ii) not siliceous and contain the product of curable compositions of the organic compound of at least two reactive groups that are selected from acrylate and methacrylate based group.
The present invention also provides a kind of loop fastening material sub-assembly, it comprises the multilayer tablet of one or more above-mentioned loop fastening materials, and wherein said loop fastening material is arranged in described sub-assembly and is set to top loop fastening material adhesive phase and directly contacts with the terry loop layer of bottom loop fastening material.
In addition, the present invention also provides the manufacture method of the loop fastening material with polysiloxanes stripping composition, it comprises the steps: to provide a kind of loop fastening material, it can be used as the looped pile part of hook and looped pile fastener member, also has a terry loop layer, terry loop layer comprises: (a) manyly be suitable in hook and loop fastening with hook portion removable lining and dawn number and preferably be not more than 12 flexible fiber looped pile and (b) back sheet less than 15, flexible looped pile is fixing within it; On described back sheet, pressure sensitive adhesive layer is arranged, on described terry loop layer, apply the curable silicone release coating composition; Make it to be exposed to light radiation or heat the polysiloxanes release coating that applies is solidified, described polysiloxanes release coating composition comprises (i) and has the polydialkysiloxane of acrylate and/or methacrylate based group and (ii) not siliceous and contain at least two organic compounds that are selected from the reactive group of acrylate and methacrylate based group.
The present invention also provides a kind of absorbent article, and it has bonding above-mentioned loop fastening material on its outer surface.
Detailed description of the invention
Loop fastening material of the present invention generally comprises successively: (1) constitutes the terry loop layer of first first type surface of loop fastening material, described terry loop layer comprises: (a) many dawn numbers of releasably meshing with hook portion in the fastener of hook and looped pile of being suitable for are less than 15 flexible fiber looped pile with (b) be fixed with the back sheet of flexible looped pile in it; (2) pressure sensitive adhesive layer of second first type surface of formation loop fastening material.
For solve above-mentioned fiber stain sub-assembly internal upper part loop fastening material adhesive phase problem and improve the globality of looped pile, the terry loop layer of described loop fastening material comprises the polysiloxanes stripping composition that one deck is specific.The polysiloxanes stripping composition of this terry loop layer comprises polydialkysiloxane with acrylate and/or methacrylate based group and not siliceous and contain the product of curing of the organic compound of at least two reactive groups that are selected from acrylate and methacrylate based group.Preferred polydialkysiloxane comprises that the siloxane unit and the ratio of the average number of acrylate or methacrylate based group are the polydialkysiloxane of 10-15.Especially being preferred for of the present invention is siloxane unit and the ratio of the average number of acrylate or methacrylate based group is the dimethyl silicone polymer of 10-15.The viscosity that is used for suitable polydialkysiloxane of the present invention is generally 100-500mPas.The example that is used for suitable polysiloxanes of the present invention is bought, and comprises the TEGO available from Goldschmidt Chemical Corp.
TMRC-902 and RC-715.
The not siliceous organic compound that reacts with polydialkysiloxane generally is the polyamino compound of polyol acroleic acid esterification or methacrylated or acroleic acid esterification or methacrylated.This organic compound has at least two, more preferably at least three acrylate and/or methacrylate based group.25 ℃ of viscosity of this organic compound also should preferably be at least 500mPas, more preferably 800mPas at least, most preferably 1500mPas at least.The object lesson that is used for organic compound of the present invention comprises the double trimethylolpropane tetraacrylate, available from Belgian UCB Chemicals E 140; Polyester acrylate available from the E-80 amine modification of UCBChemicals; With E810 available from UCB, the polyester tetraacrylate.Available from modification pentaerythritol triacrylate (viscosity the is about 500mPas) SR-444 of Sartomer, available from the aliphatic diacrylate ester oligomer CN-132 (viscosity is about 1000mPas) of Sartomer, available from the ethoxyquin bisphenol a dimethacrylate SR-348 (viscosity is about 1100mPas) of Sartomer, available from the bisphenol-a derivative diacrylate ester oligomer E-150 (viscosity is about 1400mPas) of UCB.
In the curable compositions of preparation cured product, the weight ratio of polydialkysiloxane and organic compound is 8 expediently: 92-70: 30, preferred 10: 90-60: 40, more preferably 10: 90-45: 55.
Pressure sensitive adhesive layer forms second first type surface of loop fastening material.The contact adhesive that is applicable to the adhesive phase of adhesive tape is to be generally used for the contact adhesive of diaper with adhesive tape.According to the described step test of embodiment part, the peel adhesion of loop fastening material band contact adhesive in the time of 90 ° is at least 3N/2.54cm.These 90 ° of peel adhesion are at adhesive layer and the bonding force that obtains after the polysiloxanes stripping composition of terry loop layer contacts, be adhesive tape after taking off behind the uncoiling or from the lamination of loop fastening material, should keep 90 ° of peel adhesion of 3N/2.54cm at least.Pressure sensitive adhesive layer of the present invention preferably comprises by the rubber resin based adhesive that contains tackifying resin modification viscosity.This rubber resin preferably comprises the A-B-A block copolymer, and wherein the A block is formed by styrene monomer, and the B block is formed by isoprene, butadiene or their hydride.
United States Patent (USP) № 3419585,3676202,3723170 and 3787531 has described these adhesives.
Be used for especially preferred adhesive composition of the present invention and description arranged at US5019071 and US5300057.The preferred adhesive composition contains thermoplastic elastomer (TPE) composition and resinous principle, the thermoplastic elastomer (TPE) composition substantially by about 50-90 part, preferably about 60-80 part line style or star-like styrene-isoprene-phenylethene A-B-A block copolymer and about 10-50 part, preferably the single styrene-isoprene A-B block copolymer of about 20-40 part is formed.In A-B-A and A-B block copolymer, the A block is formed by styrene or styrene homologue, and the B block combines by independent isoprene or with a small amount of other monomers and forms.
As mentioned above, the type that the A-B-A block copolymer is preferably such, i.e. its A block (end-blocks) that forms by styrene or the polymerization of styrene homologue and independent isoprene or combine the B block (central block) that forms with a small amount of other monomers and form.The number-average molecular weight of each A block is preferably at least about 7000, preferably about 12, and 000-30,000, the A block preferably accounts for the 10-35% of block copolymer weight.The number-average molecular weight of the B block of line style A-B-A block copolymer preferably is about 45,000-180, and 000, and linear copolymers self preferably is about 75,000-200,000.The number-average molecular weight of star-like A-B-A block copolymer preferably is about 125,000-400, and 000, the B block preferably is about 95,000-360,000 accordingly.
Useful star-like A-B-A polymer is United States Patent (USP) № 3281383 described types for example, and meet following general formula: (A-B-) (n) X, wherein A is the thermoplastic block that styrene or the polymerization of styrene homologue form, B is for example elastomeric block that forms of butadiene or isoprene polymerization of conjugated diene, X is to be the organic or inorganic connection molecule of 2-4 as United States Patent (USP) № 3281383 described degrees of functionality, or at " NewRubber is Backed by Stars " Chemical Week, 1975, June, 11, the 35 pages article describedly may have higher degree of functionality." n " is the number corresponding with the degree of functionality of x.
In the A-B block copolymer that styrene-isoprene forms, the number-average molecular weight of each A block generally is about 7000-20000, and the total molecular weight of block copolymer should not surpass about 150000 usually.The A-B block copolymer of styrene and prenyl has total description in United States Patent (USP) № 3787531.
The elastomer composition of preferred adhesive composition can comprise a small amount of other more conventional elastomers, and still, they should not surpass about 25% of elastomer composition weight.They comprise natural rubber, based on synthetic rubber, butyl rubber and other elastomers of butadiene, isoprene, butadiene-styrene, butadiene-acrylonitrile etc.
In the weight of 100 parts of thermoplastic elastomer (TPE) compositions, the preferred adhesive composition comprises about 20-300 part, preferred 50-150 part resinous principle.Resinous principle is made up of the tackifying resin of elastomer composition substantially.Usually can use any compatible conventional tackifying resin or the mixture of these resins.They comprise hydrocarbon resins, rosin and rosin derivative, polyterpene and other tackifier.
Adhesive phase also can comprise other different material, for example antioxidant, heat stabilizer and UV absorbers, filler etc. on a small quantity.General antioxidant is 2,5-two amyl hydroquinone and DBMP.Equally, also can use for example zinc salt of aminodithioformic acid Arrcostab of conventional heat stabilizer.Equally, particulate mixtures of the present invention can comprise small amount of filler and pigment for example zinc oxide, aluminium hydroxide, clay, calcium carbonate, titanium dioxide, carbon black etc.
The general thick 20-200 micron of adhesive phase, more preferably thick 25-100 micron.
The terry loop layer of loop fastening material of the present invention comprises can be for example woven, knitting by several method known in the industry, latitude is knitting through compiling, leading, any the removable lining upright terry loop layer that forms in the method for sewing up or make non-woven structure.Loop fastening material generally comprises back sheet, and many looped piles stretch out from back sheet.The exemplary example of the loop fastening material that the present invention uses comprises knitted fabric, for example WARP-KNITTING, lead latitude knitted fabric, tricot and circular knitted fabric, suture material and non-woven material.
Terry loop layer of the present invention is preferably extruded and is adhered on the thermoplastic film layer that forms back sheet.According to United States Patent (USP) № 5256231 described methods, by loop fastening material is provided, apply terry loop layer with the curable silicone stripping composition, and silicone release coating is solidified, just can make this loop fastening material by heating or being exposed to light radiation.
As described in United States Patent (USP) № 5256231, the method for preparing loop fastening material comprises the steps: to provide the non woven fibre sheet; Form such fibre plate, it has the arcuate section that links closely and protrude on the surperficial same direction of part defined with the interval of fibre plate; Skim molten thermoplastic material is expressed into the interval anchor portion of fiber, and to form at least a portion backing around the part that links closely at the interval of fibre plate, the arcuate section that makes fibre plate protrudes from the front surface of backing; Cooling and heat of solidification plastic material layer are to form the loop material sheet.
The step that formation has the fibre plate of arcuate section comprises: the first and second gauffer parts that are generally column are provided, each parts all has axle, and comprise the bead at the interval on many formation gauffer parts border, bead has outer surface, and form interval between the described bead, make described interval be suitable for accepting bead part with other gauffers of therebetween fibre plate engagement; Fixedly the gauffer parts are the axially parallel state and bead partly is engagement.Rotate at least one gauffer parts; Fibre plate is fed between the mate of bead, make fibre plate always consistent, and along the outer surface of the bead of first gauffer, in the interval between the part of linking closely of the bead of first gauffer and fibre plate, form the arcuate section of fiber with the border of first gauffer; After moving through the mate of bead, on preset distance, keep the fibre plate of formation along the border of first gauffer.
The loop fastening material that provides according to said method comprises backing, and this backing contains the thermoplasticity back sheet of homogeneous form; With machine-direction oriented fibre plate, this fibre plate compartment of terrain is adhered to or fuses into the common indeformable anchor portion of thermoplasticity back sheet, and the arcuate section that protrudes from the front surface of the backing between the bond site.
When the sheet of loop material is used for forming the looped pile part of the fastener of estimating access times limited (promptly be used for usually closure and open 10 times or following fastener), the height of the arcuate section of fibre plate preferably is lower than about 0.64cm (0.250inch), preferably be lower than about 0.38cm (0.15inch), the width of bond site should preferably be about 0.005-0.075inch, and the width of the arcuate section of fibre plate should be about 0.06-0.35inch.Equally, the fiber of arcuate section also should be preferably from the identical approximately height of front surface protrusion of backing, and this is 1/3 of bond site spacing highly at least, and is preferred
The dawn number of single fiber should preferably be not more than for 12 dawn less than 15 dawn, the preferred 5-300g/m of the Unit Weight of fabric integer
2(preferred 15-100g/m
2), face is recorded by the front surface of backing, can form enough greatly along aperture area between the fiber of arcuate section (promptly about 10-70% aperture area) like this, makes along the fiber of arcuate section to be easy to mesh with the hook portion of fastener member.
The fiber that forms the terry loop layer of loop fastening material can be the multiple polymers material, comprises polypropylene, polyethylene, polyester, nylon or polyamide or the composite materials of polyester core and polypropylene sheath for example.The fiber of a kind of fiber of material or different materials or combined material may be used in the fibre plate of same formation terry loop layer.
The type of solidifying when extruding the back sheet that is adhered on the terry loop layer and can be cooling partly solidifiedly in the time of maybe can being cooling then is exposed to external factor for example the crosslinked type that is called the reactive hot-melt body is carried out in atmospheric moisture or light radiation.Back sheet can for example be formed by polypropylene or polyethylene.Back sheet can also be adhered on another back sheet to form the multilayer backing.
In order to make loop fastening material of the present invention, with the terry loop layer of curable silicone stripping composition coating anchor material.Silicone release coating compositions can be by any conventional method coating known in the coating industry.The object lesson of suitable coating compounds technology comprises pressure roller coating, brush applied coating, sprayed coating, contrary roller coating, gravure coating and die head coating.Of the present invention one specifically preferred embodiment in, silicone release coating compositions does not contain solvent substantially, by the multiple roll coating.Substantially do not contain the solvent term and refer to that coating composition contains and be lower than 10% (weight), more preferably less than 5% (weight) solvent.
Silicone release coating compositions is generally to form 1-3g/m
2The amount coating of dry coating.It is 0.3-2g/m that the coating amount preferably makes the silicone release coating of (according to the described step of the embodiment) curing that records
2, preferred 0.5-1.5g/m
2
The curing of the silicone release composition of coating can or be carried out photochemistry with light radiation by heat and shine for example electron beam, ultraviolet light, X ray, gamma-rays and the enforcement of β ray.In a preferred embodiment of the present invention, silicone release coating compositions also contains heat or photochemistry radical initiator.The useful photochemistry radical initiator that can use in conjunction with ultraviolet light is that the example of light trigger comprises for example benzyl ketone ketal, benzoin ether, acetophenone derivative, ketoxime ether, benzophenone, benzo or thioxanthones etc.The object lesson of light trigger comprises: 2; 2-diethoxy acetophenone, 2-or 3-or 4-bromo acetophenone, benzoin, benzophenone, 4-chloro benzophenone, 4-phenyl benzophenone, benzoquinones, 1-chloroanthraquinone, right-diacetyl benzene, 9; 10-dibromoanthracene, 1; 3-takes off phenyl-2-acetone, 1; 4-naphthyl-phenyl ketone, 2,3-amylene Dione, Propiophenone, clopenthixal ketone, xanthone, Fluorenone and composition thereof.An example of this photoinitiator has available from New York Hawthorne, Ciba Geigy Corporation trade name Darocur 1173.Another kind of light trigger is the mixture of 70%Oligo 2-hydroxyl 2-methyl isophthalic acid-4-(1-methyl ethylene) phenylacetone and 30%2-hydroxy-2-methyl-1-phenyl-1-acetone, available from Lambertispa (Italian Albizzqte), with ESACURE KIP 100F.
When containing radical initiator, in 100 parts of (weight) silicone release compositions, its use amount is generally 1-10 part (weight), and more preferably 2-5 part (weight) is a benchmark with 100 parts of (weight) silicone release compositions.
By adding conventional the polymerization inhibitor for example monomethyl ether, phenthazine, two-tert-butyl group-paracresol etc. of quinhydrones, quinhydrones, just can make radiation-hardenable silicone release coating compositions stabilisation of the present invention and premature polymerization that can be during seasoning.Usually use 0.1% (weight) or following stabilizing agent just to produce effect.
Then, on the loop fastening material face opposite, provide pressure sensitive adhesive layer with the face of band terry loop layer.Pressure sensitive adhesive layer can be by any coating technology coating known in the industry, or earlier with the adhesive phase coating to peeling liner, shift laminating again.The suitable coating compounds technology comprises coating technology that hot melt coatings technology and solvent or water make carrier for example scraper coating, die head coating, sprayed coating, curtain coating peace plate coating.
Loop fastening material of the present invention provides with the sub-assembly form expediently, and wherein one or more loop fastening material sheet rows are set to the adhesive phase that makes the top loop fastening material and directly contact with the terry loop layer of the loop fastening material of bottom.This sub-assembly comprises for example a pile loop fastening material sheet that is laminated on another top.But one or more loop fastening material sheets also can self roll, and form the sub-assembly of web-like.
Loop fastening material of the present invention can be used in any requirement the looped pile component of hook and looped pile machinery fastener body is bound in the occasion that is incorporated on the base material.Particularly, loop fastening material can be attached to for example outer surface of disposable diaper of absorbent article (disposable).Loop fastening material can be applied on the diaper in many ways, and has one or more functions in a diaper.
Looped pile fastening material is used on the center waistband of disposable diaper anter usually.When this purposes, be called preceding bluff piece, for example United States Patent (USP) 5053,026 (Eoia etc.) is shown in Figure 1.
Loop fastening material of the present invention also can be used as the assembly of the diaper enclosed system that is attached to diaper flank position, and can be used in the lamination.For example, loop fastening material can be used as three parts with mechanically sealed lamination, for example as described in the UK patent application GB2257895 and european patent application 98121337.4 that proposes on November 10th, 1998 as 3M, want the time spent, the band of preceding bluff piece is separated from lamination, and for good and all be adhered to the positive front of diaper.
Loop fastening material also can be used in the airtight lamination, after being adhered to the diaper flank, prevents that folded stack from opening or unclamp gradually, and for example european patent application № EP795307 is described.Loop fastening material also can be used in the airtight lamination, and with the diaper that processing is stained, for example european patent application 529681 and European patent application EP 321324 are described.
Further specify the present invention with embodiment below, these embodiment do not limit the scope of the invention.
Embodiment
Method of testing
The measurement of the amount of stripping composition on the terry loop layer surface
Use is available from Texas Austin, and the x-ray fluorescence analyzer 200TL type of ASOMA Instruments is measured the amount of stripping composition on the terry loop layer surface.Method of testing obtains from the Th.Goldschmidt AG of German Essen, and it divides two parts: collimation technique is KM RC 005A, and measuring technique is SM316A.
Collimation technique comprises the uv-curable dimethyl silicone polymer (PDMS) (available from Th.Goldschmidt TEGO-RC 726) that at first applies and solidify known quantity on polyester film.Apply the coating of at least 5 kinds of known difference amounts, with ultraviolet light polymerization and measure their XRF.Then, make the calibration curve of XRF and PDMS magnitude relation.
Measuring technology adopts the XRF of silicon atom.The testing substrates that has the unknown quantity siloxanes on the surface is carried out the XRF test.Record epipolic absolute value, and read the amount of corresponding PDMS from calibration curve.
Then, use following formula, peel off the actual amount of component from the amount gauging surface of the PDMS that records.
Lip-deep component (the g/m that peels off
2Amount (the g/m of the PDMS that record on the coating material)=[
2Amount (the g/m of the PDMS that records on the coating material of)-not
2)]/peel off the factor of component
The parameter regulation of substitution following formula is as follows:
1. read out in the amount (g/m of the PDMS that coating material records from the calibration curve of fluorescence volume and PDMS magnitude relation
2);
2. be that to peel off numerical value that the loop fastening material (be equivalent to " blank " test) of component records from nothing be the amount (g/m of the PDMS on the coating material not
2);
3.Th.Goldschmidt provide the factor (" RC number ") of the siloxanes of every kind of uv-curable (methyl) acroleic acid esterification in the method for testing.This is the factor of uv-curable siloxanes (PDMS) substantially.This factor is always less than 1.0, and less uv-curable siloxanes (acrylate group the is more) gene polyadenylation signal of content of siloxane is also less.Peeling off this factor of component calculates in the weight average mode with the consumption and the factor of every kind of used material.Not having the factor of the additive (not silicon atoms) of dimethyl silicone polymer unit is 0.
Peel off (improved Keil test) for 90 °
This method of testing is test required power when adhesive tape taken off from peeling off a coating surface.
Adhesive surface is put on the plate, and with 2kg roller roll-in twice, thereby first loop fastening material sample 5cm is wide and that 10cm is long is adhered on the steel substrate.
Second loop fastening material sample that the wide and 10cm of 5cm is long be put into first sample above, the adhesive layer of second sample is contacted with the release coating of first sample.With twice in the sample of the downward roll-in lamination of 2kg roller.
Then, laminate is put into 50 ℃ of force ventilated baking ovens, on laminate, place the 1400g load and reach 3 days, simultaneously 50 ℃ of heating.
Then, from baking oven, take out the laminate of test, before test, make it to be statically placed in 23 ℃ and 50% relative humidity and reach 24 hours.
Use the described 90 ° of peel adhesion methods of top 90 ° of peel adhesion part of detecting,, peel off the bonding of second sample from the terry loop layer of first sample with the peeling rate of 300mm/min.
To every kind of evaluation of material three times, and the result is average.The data unit of record is N/50mm.
90 ° of peel adhesion
Roll up the part loop fastening material test peel adhesion of uncoiling with the loop fastening material of the described preparation of embodiment.At first with above-mentioned improved Keil test loop fastening material sample.In the Keil test, after uppermost loop fastening material is taken off from lower belt strap in 90 ° of angles, immediately uppermost loop fastening material is adhered on the following polyethylene test surfaces.With after the siloxy group release liner contacts, loop fastening material is adhered to the ability on the polyethylene film to this test evaluation adhesive under heat and pressure effect.
Press legal system and be ready for use on polyethylene film in this test.
With 182 ℃ of melt temperatures, from conventional hanger formula flute profile die orifice vertically downward the melt extrusion index be that 3.5g/10min and density are 0.918g/cm
3Ldpe resin (available from the Tenite 1550P of the Eastman Chemical Co. of Tennessee Kingsport).The melt that leaves die head is drawn in the spacing of mirror finish chromium roller (8 ℃ of inlet water temperatures) and silicone rubber roller (7 ℃ of inlet water temperatures) formation, forms the film of 330 micron thickness.The film surface of contact chromium roller is used for test.The average surface roughness Ra that is used for testing the film surface of peel adhesion is 1.4 microns, and the average height Rz of peak and valley is 12.5 microns.Roughness value Ra and Rz use available from the UB-16 type laser surface photometer of the UBM Messtechnik GmbH of German Ettlingen and measure.Roughness value calculates with this instrument according to Deutsche Industrie Norm (DIN) 4768 and DIN4762.
At first polyethylene film is glued fast on the stainless steel test plate surface, makes the base material of test usefulness.With double-faced adhesive tape polyethylene film (available from the Tape 410 of 3M Company) is adhered on the test board.
Use is suitable for the tester for elongation of ad hoc structure and measures 90 ° of peel adhesion, will keep 90 ° of peel angles at test period.Apparatus structure has description (Transformateurs d ' the Adhesifs etThermocollants sur Papiers et autres Supports (FINAT) that comes from European international fabric alliance) in 90 ° of peel test method of FINAT TEST METHOD NO.2 standard.
The FINAT method there is following several exception:
1) replaces the glass baseplate that FINAT 2 needs with polyethylene film;
2) replace " standard FINAT tests roller " with the 2kg roller;
3) be directed downwards the roll-in sample once with 300mm/min along each, rather than the FINAT method is desired with twice of 200mm/min roll-in;
4) time of repose is zero substantially, rather than needed 20min and 24 hours of being respectively of FINAT method;
With the downward roll-in twice of 2kg roller, sample 30cm is long and the loop fastening material that 2.54cm is wide is adhered to the polyethylene surface (the film surface that contacts with the chromium roller during preparation) of test board.The part of loop fastening material end is freely, is used for the tester clamp described in the tested method.After the time of repose below 1 minute, peel off loop fastening material from the polyethylene base material with the speed of 300mm/min.
90 ° of data units of peeling off of record are N/2.54cm.Estimate three samples, and with results averaged.
The material that uses among the embodiment
(methyl) acrylate-functional siloxanes
RC-715 is that degree of functionality is the dimethyl silicone polymer of the acrylate-functionalization of 26:2 (13.0), available from German Essen, Th.Goldschmidt AG with TEGO RC-715.
RC-902 is that degree of functionality is the dimethyl silicone polymer of the acrylate-functionalization of 56:4 (14.0), available from German Essen, and the TEGO RC-902 of Th.Goldschmidt AG.
" degree of functionality " is defined as the ratio of dimethyl siloxane units number/(methyl) acrylate group number.
Organic compound
E140 double trimethylolpropane tetraacrylate (DMPTA), Mw=438, viscosity=
1100mPas, available from Belgian Drognebos, the E140 of UCB Chemicals;
The polyester acrylate of E80 amine modification, viscosity=3000mPas is available from German Drognebos
UCB Chemicals.
The uv photopolymerization initator
DAROCUR 1173 2-hydroxy-2-methyl-1-phenyl-propane-1-one ultraviolet initiator is available from the Ciba Geigy of Switzerland Basel.
Embodiment 1
Use the loop material XML 6157 that extrudes the terry loop layer that is adhered to backing that comprises of (available from the 3M company of Minnesota ,USA St.Paul), make loop fastening material.The thickness of the looped pile part of backing is 380 microns.The weight of the polypropylene screen part of backing is 40g/m
2The fiber of terry loop layer comprises that diameter is about 37 microns or be about the polypropene staple at 9 dawn.
The propeller type mixing and blending machine that uses motor to drive mixes 30% (weight) uv-curable siloxanes (available from the TEGO of German Essen Th.Goldschmidt AG at 23 ℃
TMRC-902), 70% (weight), two trimethylolpropane tetra-acrylate (viscosity=1100mPas is available from the E140 of UCBChemical for DMPTA, Mw=438) and 3% (weight) uv photopolymerization initator are (available from Switzerland Basel Ciba-GeigyDAROCUR
TM1173) reach 10 minutes, make uniform milk-white coloured suspension.Then, use the multiple roll coater, with 2.5g/m
2Amount this suspension is applied on the terry loop layer of backing.Apply weight difference before and after the stripping composition by backing, record coating weight.
Then, the loop fastening material of coating uses ultraviolet light solidified coating in inert atmosphere (nitrogen) by the 120W/cm mercury lamp (available from Maryland Gaithersberg, Fusion UV Systems Inc.MODEL F-450) of middle pressure.The distance on lamp and terry loop layer surface is 2.5cm.
Then, on the face of the loop fastening material opposite, apply the individual layer contact adhesive with the face that carries terry loop layer.This adhesive based on synthetic block copolymer and with the mixture of tackifying resin, by the hot melt application technique of routine, use lifting die head is with 33g/m
2Amount, apply.
The loop fastening material of making like this is rolled into volume, cuts open into the wide thinner volume of 50mm again.The composition that is used for preparing loop fastening material is as shown in table 1.
With the volume part uncoiling of making like this, and carry out improved Keil test.The sample in measurement that uses the Keil test is to the bonding force on the normal polyethylene surface described in the above-mentioned method of testing.
The test result of loop fastening material is as shown in table 2.
Embodiment 2
Repeat embodiment 1, difference is to use another kind of organic compound.In embodiment 2, use 70 parts of viscosity to be about the E80 of 3000mPas, the polyester acrylate of amine modification (available from German Drogenbos, the E80 of UCB Chemicals), as organic compound, the RC-902 in 30 parts of embodiment 1 uses.
As described in embodiment 1, at first on the looped pile face, apply and solidify stripping composition, with the preparation loop fastening material, it is described to press embodiment 1 again, applies contact adhesive on overleaf.
Embodiment 3
Repeat embodiment 1, the uv-curable siloxanes that difference is to be used for stripping composition is RC-715, rather than the RC-902 among the embodiment 1.
Comparative Examples 1
Repeat embodiment 1, the silicone release coating that difference is to be applied on the terry loop layer is the described polysiloxane-polyurea segmented copolymers of european patent application № 250248 (Leir etc.).This coating is to be applied by intaglio plate formula manner of application, and drying is 0.5g/m to form weight
2Dry coating.
As described in embodiment 1, on the back side of the face that comprises terry loop layer, provide contact adhesive, make loop fastening material.Again this loop fastening material is rolled into volume, and test.
Test result is as shown in table 2.The power of releasing pressure-sensitive adhesive from the release coating that records is 23.1N/50mm, and too high peel value makes to be difficult to debatching, and can cause the infringement of looped pile surface physics.
Table 1
| Embodiment | PSA (g/m 2) | Silicone compounds | Organic compound | Stripping composition | ||||
| Type (weight %) | Degree of functionality | Viscosity (mPas) | Type (weight %) | Viscosity (mPas) | Viscosity (mPas) | Amount (the g/m that records 2) | ||
| 1 | 33 | RC902(30) | 14 | 350 | E140 (70) | 1100 | 1077 | 1.5 |
| 2 | 33 | RC902(30) | 14 | 350 | E80 (70) | 3000 | 2650 | 1.5 |
| 3 | 33 | RC715(30) | 13 | 150 | E140(70) | 1100 | 870 | 1.5 |
Table 2
| Embodiment | Peel off (Keil test), N/50mm for 90 ° | Peel off N/25mm for last 90 ° from PE |
| 1 | 6.4 | 3.41 |
| 2 | 7.4 | 4.31 |
| 3 | 4.7 | 4.92 |
| Comparative Examples 1 | 23.1 | 4.71 |
Claims (11)
1. the looped pile fastening material of a looped pile part that can be used as hook and looped pile fastener member, described looped pile fastening material comprises successively: (1) terry loop layer, this terry loop layer comprises:
(a) many being suitable in hook and looped pile fastener member, with hook portion removable lining and dawn number less than 15 flexible fiber looped pile and
(b) back sheet, described flexible looped pile is fixing within it; With
(2) pressure sensitive adhesive layer, this layer are positioned on back sheet and the surface surface opposite that contains flexible looped pile;
It is characterized in that described terry loop layer contains polysiloxane and peels off component, this component comprises a kind of product of curable compositions, and described composition comprises that (i) has the polydialkysiloxane of acrylate and/or methacrylate based group and (ii) not siliceous and contain at least two organic compounds that are selected from the reactive group of acrylate and methacrylate based group.
2. looped pile fastening material as claimed in claim 1, wherein said curable compositions be can be when being exposed to light radiation cured compositions.
3. looped pile fastening material as claimed in claim 1, the siloxane unit average number of wherein said polydialkysiloxane is 10-15 with the ratio of the average number of acrylate and methacrylate based group.
4. looped pile fastening material as claimed in claim 1, the viscosity of wherein said organic compound in the time of 25 ℃ is at least 500mPas.
5. looped pile fastening material as claimed in claim 1, the weight ratio of polydialkysiloxane and organic compound is 8 in the wherein said curable compositions: 92-70: 30.
6. looped pile fastening material as claimed in claim 1, wherein said terry loop layer are to extrude to be adhered on the thermoplastic film layer that forms described back sheet.
7. the sub-assembly of a looped pile fastening material, it comprises one or more as the multilayer tablet of looped pile fastening material as described in each among the claim 1-6, in described sub-assembly, the adhesive phase that described looped pile fastening material row is set to top looped pile fastening material directly contacts with the terry loop layer of bottom looped pile fastening material.
8. the sub-assembly of looped pile fastening material as claimed in claim 7, wherein said sub-assembly are self the rolled-up coiled materials that comprises one or more described looped pile fastening material piece.
9. manufacture method with looped pile fastening material of silicone release composition, it comprises the steps:
A kind of looped pile fastening material with terry loop layer is provided, it can be used as the looped pile fastening material of the looped pile part of hook and looped pile fastener member, and described terry loop layer comprises: (a) many be suitable in hook and looped pile fastener member removable lining with hook portion, and the dawn number is less than 15 flexible fiber looped pile, (b) back sheet, described flexible looped pile is fixing within it;
On described back sheet, provide pressure sensitive adhesive layer;
On described terry loop layer, apply the curable silicone release coating composition;
Make it to be exposed to light radiation or heat, the silicone release coating that applies is solidified, and described silicone release coating compositions comprises (i) and has the polydialkysiloxane of acrylate and/or methacrylate based group and (ii) not siliceous and contain at least two organic compounds that are selected from the reactive group of acrylate and methacrylate based group.
10. absorbent article, it have bonding on its outer surface as each described looped pile fastening material among the claim 1-6.
11. as each described looped pile fastening material that is bonded on the base material among the claim 1-6.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP99200931.6 | 1999-03-26 | ||
| EP99200931A EP1038461A1 (en) | 1999-03-26 | 1999-03-26 | Loop fastening material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1345197A CN1345197A (en) | 2002-04-17 |
| CN1144544C true CN1144544C (en) | 2004-04-07 |
Family
ID=8240028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB00805455XA Expired - Fee Related CN1144544C (en) | 1999-03-26 | 2000-03-17 | Loop fastening material |
Country Status (10)
| Country | Link |
|---|---|
| EP (2) | EP1038461A1 (en) |
| KR (1) | KR100634139B1 (en) |
| CN (1) | CN1144544C (en) |
| AR (1) | AR023175A1 (en) |
| AU (1) | AU3899400A (en) |
| BR (1) | BR0009339A (en) |
| DE (1) | DE60005314T2 (en) |
| MX (1) | MXPA01009622A (en) |
| TW (1) | TW536471B (en) |
| WO (1) | WO2000057742A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19952417A1 (en) | 1999-10-30 | 2001-05-03 | Binder Gottlieb Gmbh & Co | Process for the manufacture of an adhesive fastener part |
| US7805818B2 (en) | 2001-09-05 | 2010-10-05 | The Procter & Gamble Company | Nonwoven loop member for a mechanical fastener |
| US7524545B2 (en) | 2002-05-16 | 2009-04-28 | 3M Innovative Properties Company | Release coating containing thermoplastic silicone-containing polymer |
| KR200453530Y1 (en) * | 2010-10-18 | 2011-05-11 | 김영식 | Multi-paly device |
| DE102012000374A1 (en) * | 2012-01-12 | 2013-07-18 | Gottlieb Binder Gmbh & Co. Kg | A method of manufacturing a plastic product, including apparatus for carrying out the method, and a closure or adhesive product made by the method and apparatus |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0250248B1 (en) * | 1986-06-20 | 1997-11-05 | Minnesota Mining And Manufacturing Company | Block copolymer, method of making the same, diamine precursors of the same method, method of making such diamines and end products comprising the block copolymer |
| US5256231A (en) * | 1988-05-13 | 1993-10-26 | Minnesota Mining And Manufacturing Company | Method for making a sheet of loop material |
| JP3029047B2 (en) * | 1993-04-16 | 2000-04-04 | ミネソタ マイニング アンド マニュファクチャリング カンパニー | Loop fastener material storage / dispensing assembly |
| JP2971332B2 (en) * | 1994-07-08 | 1999-11-02 | 大和紡績株式会社 | Hook fastener female material |
| US5562992A (en) * | 1994-08-02 | 1996-10-08 | Avery Dennison Corporation | Radiation-curable silicone release compositions and coated articles |
-
1999
- 1999-03-26 EP EP99200931A patent/EP1038461A1/en not_active Withdrawn
-
2000
- 2000-03-17 WO PCT/US2000/007268 patent/WO2000057742A1/en active IP Right Grant
- 2000-03-17 EP EP00918128A patent/EP1164886B1/en not_active Expired - Lifetime
- 2000-03-17 MX MXPA01009622A patent/MXPA01009622A/en active IP Right Grant
- 2000-03-17 KR KR1020017012259A patent/KR100634139B1/en not_active IP Right Cessation
- 2000-03-17 DE DE60005314T patent/DE60005314T2/en not_active Expired - Lifetime
- 2000-03-17 AU AU38994/00A patent/AU3899400A/en not_active Abandoned
- 2000-03-17 BR BR0009339-4A patent/BR0009339A/en not_active IP Right Cessation
- 2000-03-17 CN CNB00805455XA patent/CN1144544C/en not_active Expired - Fee Related
- 2000-03-24 TW TW089105482A patent/TW536471B/en not_active IP Right Cessation
- 2000-03-27 AR ARP000101360A patent/AR023175A1/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| EP1164886B1 (en) | 2003-09-17 |
| EP1038461A1 (en) | 2000-09-27 |
| KR20020019897A (en) | 2002-03-13 |
| TW536471B (en) | 2003-06-11 |
| WO2000057742A1 (en) | 2000-10-05 |
| AU3899400A (en) | 2000-10-16 |
| CN1345197A (en) | 2002-04-17 |
| DE60005314D1 (en) | 2003-10-23 |
| DE60005314T2 (en) | 2004-08-19 |
| BR0009339A (en) | 2002-02-19 |
| AR023175A1 (en) | 2002-09-04 |
| MXPA01009622A (en) | 2002-05-14 |
| KR100634139B1 (en) | 2006-10-17 |
| EP1164886A1 (en) | 2002-01-02 |
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