CN117901573A - Hot melt adhesive-directly-sprayed hot-drawn film and preparation process thereof - Google Patents
Hot melt adhesive-directly-sprayed hot-drawn film and preparation process thereof Download PDFInfo
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- CN117901573A CN117901573A CN202410113986.7A CN202410113986A CN117901573A CN 117901573 A CN117901573 A CN 117901573A CN 202410113986 A CN202410113986 A CN 202410113986A CN 117901573 A CN117901573 A CN 117901573A
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- 238000002360 preparation method Methods 0.000 title abstract description 106
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- 238000001179 sorption measurement Methods 0.000 claims abstract description 38
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- 239000003795 chemical substances by application Substances 0.000 claims abstract description 23
- 239000002250 absorbent Substances 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 20
- 230000002745 absorbent Effects 0.000 claims abstract description 19
- 239000003381 stabilizer Substances 0.000 claims abstract description 18
- 239000006096 absorbing agent Substances 0.000 claims abstract description 17
- 238000011049 filling Methods 0.000 claims abstract description 17
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- 150000001875 compounds Chemical class 0.000 claims abstract description 12
- 125000001033 ether group Chemical group 0.000 claims abstract description 12
- 239000004094 surface-active agent Substances 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 238000010409 ironing Methods 0.000 claims abstract description 8
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical class CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 21
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 19
- 238000002347 injection Methods 0.000 claims description 19
- 239000007924 injection Substances 0.000 claims description 19
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 18
- 239000011248 coating agent Substances 0.000 claims description 18
- 238000000576 coating method Methods 0.000 claims description 18
- 238000001035 drying Methods 0.000 claims description 18
- 229910021485 fumed silica Inorganic materials 0.000 claims description 18
- 239000002245 particle Substances 0.000 claims description 16
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 12
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 10
- 229920000570 polyether Polymers 0.000 claims description 10
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- 150000003077 polyols Chemical class 0.000 claims description 10
- 239000004359 castor oil Substances 0.000 claims description 8
- 235000019438 castor oil Nutrition 0.000 claims description 8
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 claims description 8
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical compound C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 claims description 7
- 229920000223 polyglycerol Polymers 0.000 claims description 7
- 150000001343 alkyl silanes Chemical class 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- RSKGMYDENCAJEN-UHFFFAOYSA-N hexadecyl(trimethoxy)silane Chemical compound CCCCCCCCCCCCCCCC[Si](OC)(OC)OC RSKGMYDENCAJEN-UHFFFAOYSA-N 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 2
- 125000005442 diisocyanate group Chemical group 0.000 claims description 2
- 238000003618 dip coating Methods 0.000 claims description 2
- SCPWMSBAGXEGPW-UHFFFAOYSA-N dodecyl(trimethoxy)silane Chemical compound CCCCCCCCCCCC[Si](OC)(OC)OC SCPWMSBAGXEGPW-UHFFFAOYSA-N 0.000 claims description 2
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 2
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 2
- 238000005507 spraying Methods 0.000 abstract description 7
- 239000000853 adhesive Substances 0.000 abstract description 6
- 230000001070 adhesive effect Effects 0.000 abstract description 6
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- AOBIOSPNXBMOAT-UHFFFAOYSA-N 2-[2-(oxiran-2-ylmethoxy)ethoxymethyl]oxirane Chemical compound C1OC1COCCOCC1CO1 AOBIOSPNXBMOAT-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 230000000740 bleeding effect Effects 0.000 description 3
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- 239000012528 membrane Substances 0.000 description 3
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- 235000004443 Ricinus communis Nutrition 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 2
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- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Chemical class CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 2
- 125000004805 propylene group Chemical class [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
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- 238000003912 environmental pollution Methods 0.000 description 1
- SBRXLTRZCJVAPH-UHFFFAOYSA-N ethyl(trimethoxy)silane Chemical group CC[Si](OC)(OC)OC SBRXLTRZCJVAPH-UHFFFAOYSA-N 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000007641 inkjet printing Methods 0.000 description 1
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
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- Adhesives Or Adhesive Processes (AREA)
Abstract
The application relates to the field of hot-dip films, and discloses a hot-dip film capable of directly spraying hot melt adhesive and a preparation process thereof. The hot melt adhesive-directly-sprayed hot melt adhesive picture-ironing film comprises a back dummy layer, a PET layer, a release layer and a directly-sprayed ink-absorbing layer which are sequentially arranged, wherein the directly-sprayed ink-absorbing layer is prepared by solidifying an ink-absorbing agent prepared from the following raw materials in parts by weight: 45-65 parts of aqueous polyurethane resin, 15-25 parts of adsorption filler, 10-20 parts of diluent, 3-6 parts of stabilizer and 0.4-1 part of curing agent; the adsorption filling material is prepared by modifying a long-chain silane coupling agent, a compound containing long-chain ether groups and a surfactant; the preparation method comprises the following steps: the back dummy layer and the release layer are respectively compounded on one surface of the PET layer, and the surface close to the release layer is coated with an ink absorbent and dried; the hot melt adhesive solution can be directly sprayed when the hot melt adhesive film is printed with ink, the adsorptivity to the hot melt adhesive solution is good, the adhesive overflow is avoided, and the finished product of the hot melt adhesive film has high pattern precision and is not easy to deform.
Description
Technical Field
The application relates to the technical field of hot melt adhesive films, in particular to a hot melt adhesive film capable of directly spraying hot melt adhesive and a preparation process thereof.
Background
The hot-drawn film is prepared by the following steps: firstly, printing patterns or characters on a pyrograph film in advance, then spreading hot melt adhesive powder on one side surface of the patterns or characters, shaking off the redundant hot melt adhesive powder, and then baking at high temperature to enable the hot melt adhesive powder to be completely melted and attached to one side surface of the patterns or characters, and forming an adhesive layer after solidification, so that the pyrograph film is prepared; when the novel hot stamping film is used, patterns or characters on the substrate film are transferred onto a printing object such as clothes through the effect of heat and pressure, the patterns or characters can be stably attached to the printing object due to the existence of the adhesive layer, and the effects of pattern designing and people's demands can be achieved due to the fact that the pattern or character layers of the hot stamping film are rich, the color difference is small and the reproducibility is good.
However, when printing patterns or characters, a large amount of ink needs to be sprayed and printed on the surface of the substrate film, and the large amount of ink is easy to flow, so that the formed patterns or characters are deformed; when the excessive hot melt adhesive powder is shaken off, the hot melt adhesive powder is easy to shake off and fall off or scatter into a working environment, and the problems of poor hot stamping and environmental pollution are easy to generate; the above problems affect the yield and the usability of the hot-drawn film, so that further researches are required for the current hot-drawn film.
Disclosure of Invention
In order to solve the technical problems, the application provides a hot melt adhesive-directly-sprayed pyrograph film.
In a first aspect, the application provides a hot melt adhesive-directly-sprayed pyrograph film, which adopts the following technical scheme:
the utility model provides a but hot melt adhesive's pyrograph membrane, includes the back dead layer, PET layer, from layer and the direct injection ink absorption layer that laminate in proper order and set up, but direct injection ink absorption layer is formed by ink absorbent solidification, ink absorbent is made by the raw materials of following parts by weight:
The adsorption filling material is prepared by modifying a long-chain silane coupling agent, a compound containing long-chain ether groups and a surfactant.
By adopting the technical scheme, the hot melt adhesive hot stamping film prepared by the application takes the back dummy layer and the PET layer as the supporting base layer, the release layer and the direct-injection ink-absorbing layer are arranged on the supporting base layer, the direct-injection ink-absorbing layer can stably absorb printing ink and the hot melt adhesive, and when in use, thermal transfer printing is carried out, and under the action of the release layer, the supporting base layer and the direct-injection ink-absorbing layer are separated to finish pattern or character transfer printing; compared with the conventional hot-stamping film, the hot-stamping film prepared by the method has the advantages that the ink carrying performance is stronger, patterns or characters formed by printing are not easy to shrink and deform, the color reduction degree is high, the hot-melt adhesive solution can be stably adsorbed, the defect that the adhesiveness between the hot-stamping film and a carrier is improved by using hot-melt adhesive powder in the conventional process is overcome, the hot-melt adhesive solution can be stably adsorbed by directly spraying, the adhesive force is good, the condition of overflowing adhesive is avoided, and the precision and the processing efficiency of a finished product of the hot-stamping film are improved.
According to the application, the aqueous polyurethane resin is used as ink-absorbing resin, the aqueous polyurethane resin has better ink absorbability and film forming property, the thinner, the stabilizer and the curing agent are added into the ink-absorbing resin, the thinner, the stabilizer and the ink-absorbing resin are further crosslinked under the action of the curing agent to form the directly-jet ink-absorbing layer with a reticular molecular structure, the adsorption filler can promote the porosity of the directly-jet ink-absorbing layer, and the adsorption filler is mutually cooperated with the reticular molecular structure, so that the adsorbed printing ink and hot melt adhesive can be stably carried while the adsorption filler has larger adsorptivity, the situations of ink bleeding and glue overflow are reduced, and further, in order to promote the dispersion property of the adsorption filler in an ink-absorbing resin system, the long-chain alkyl silane coupling agent, the compound containing long-chain ether groups and the surfactant are used for modifying the filler, so that the adsorption filler is prepared, and the ink-carrying adsorptivity and the hot melt adhesive solution adsorptivity of the prepared hot-stamping film are further improved.
Preferably, the adsorption filling material is prepared by the following steps:
Adding 0.5-1.5 parts by weight of surfactant into 10-15 parts by weight of water, adding 5-8 parts by weight of filler, uniformly dispersing, adding 0.5-1 part by weight of long-chain silane coupling agent and 0.3-0.8 part by weight of compound containing long-chain ether groups, stirring at 40-60 ℃ for 30-60min, filtering, and drying to obtain the adsorption filler;
The filler is fumed silica and spherical alumina, the long-chain alkyl silane coupling agent is any one of dodecyl trimethoxy silane and hexadecyl trimethoxy silane, the compound containing long-chain ether group is polyglycerol glycidyl ether, and the surfactant is isomeric alcohol polyoxyethylene ether.
According to the technical scheme, the fumed silica and the spherical alumina are used as the filling materials, the fumed silica and the spherical alumina have larger specific surface areas, the adsorption capacity of the prepared direct-injection ink-absorbing layer can be improved through compounding, the surfactant is used as an emulsifying agent and a dispersing agent, the water is added, the filling materials are fully soaked and dispersed, the filling materials are subjected to surface modification under the action of the long-chain silane coupling agent and the polyglycerol glycidyl ether, the filling materials are subjected to coupling grafting with the long-chain silane coupling agent and the polyglycerol glycidyl ether stably, the long-chain silane coupling agent has longer carbon-carbon bonds, the compatibility of the filling materials and the aqueous polyurethane resin system can be improved, the polyglycerol glycidyl ether has a reticular molecular structure, the cross-linking dispersion stability of the filling materials in the aqueous polyurethane resin system can be improved, the stable reticular cross-linking structure can be formed, the adsorption stability of the prepared direct-injection ink-absorbing layer can be further improved, and the adsorptivity of the prepared hot-stamping film to printing ink and hot melt adhesive can be improved.
Preferably, the weight ratio of the fumed silica to the spherical alumina is 1 (0.2-0.5).
Preferably, the particle size ratio of the fumed silica to the spherical alumina is 1 (1.5-2), and the particle size of the fumed silica is 50-100nm.
Through adopting above-mentioned technical scheme, through controlling the quantity ratio and the particle diameter ratio of filler for the interval of contact space between the adjacent particle of filler grow, the porosity of the direct-injection ink absorption layer of promotion preparation makes the surface of the direct-injection ink absorption layer of preparation can form the uneven surface that has the micropore structure of big interval, further promotes the ink-carrying nature and the hot melt adhesive adsorption stability of the picture film of scalding of preparation.
Preferably, the diluent consists of castor oil modified polyol and propylene glycol block polyether in a weight ratio of 1 (0.2-0.4).
Through adopting above-mentioned technical scheme to castor oil modified polyol and propylene glycol block polyether of preferred proportion are as the diluent, can stably carry out even dispersion to waterborne polyurethane resin and adsorption filling material, promote the coating homogeneity of the ink absorber of making, can carry out stable cross-linking with the curing agent simultaneously, further promote the adsorption stability of the direct injection ink absorbing layer of making.
Preferably, the stabilizer consists of diethylene glycol and Si-69 silane coupling agent in the weight ratio of 1 (0.1-0.3).
By adopting the technical scheme, the dispersion and leveling stability of the prepared ink absorbent can be improved by adopting the diethylene glycol and the Si-69 silane coupling agent with a better proportion, the uniformity of the surface micropore structure of the prepared direct-injection ink absorbent layer can be further improved, and the adsorption stability of the prepared hot-stamping film can be improved.
Preferably, the curing agent is a diisocyanate curing agent.
By adopting the technical scheme, the curing agent can improve the crosslinking curing performance of the ink absorbent, and further improve the adsorption performance of the prepared direct-injection ink-absorbing layer.
Preferably, the ink absorber is prepared by the steps of:
A1, adding aqueous polyurethane resin, a diluent and a stabilizer into reaction equipment, and uniformly stirring to prepare a mixture A;
a2, adding the adsorption filling material and the curing agent into the mixture A, and uniformly stirring to obtain the ink absorbent.
By adopting the technical scheme, the ink absorbent with stable performance, uniform dispersion of the adsorption filling material and good coating performance is prepared.
In a second aspect, the application provides a process for preparing a hot melt adhesive-directly-sprayed pyrograph film, which adopts the following technical scheme:
a preparation process of a hot melt adhesive-directly-sprayed hot-drawn film comprises the following preparation steps:
s1, coating a back dummy agent on one surface of a PET layer, and drying to form a back dummy layer;
s2, coating a release agent on one surface of the PET layer, which is far away from the back dummy layer, and drying to form a release layer;
s3, coating an ink absorbent on one surface of the release layer, which is far away from the PET layer, and drying to form a direct-injection ink absorbent layer, so as to prepare the hot melt adhesive pyrograph film.
By adopting the technical scheme, the hot melt adhesive-absorbing and ink-absorbing hot melt adhesive film which is easy to transfer is prepared.
Preferably, the coating amount of the ink absorbent in the step S3 is 3.8-5g/m 2, the drying temperature is 80-100 ℃, and the drying time is 1.5-2.5h.
Through adopting above-mentioned technical scheme to coating ink absorber with better coating amount, and solidify with better time and temperature and form but direct injection ink absorption layer, the pyrograph membrane of making has better ink carrying amount, and the printed pattern is difficult for warping, can stably adsorb hot melt adhesive simultaneously, does not overflow the glue.
In summary, the application has the following beneficial effects:
1. According to the hot melt adhesive-capable picture-ironing film, the water-based polyurethane resin is used as the ink-absorbing resin, the diluent, the adsorption filler, the stabilizer and the curing agent are compounded, the prepared direct-injection ink-absorbing layer can stably adsorb printing ink and the hot melt adhesive, so that compared with a conventional picture-ironing film, the prepared picture-ironing film is higher in ink carrying performance, patterns or characters formed by printing are not easy to shrink and deform, high in color reduction degree, the hot melt adhesive solution can be stably adsorbed, the defect that the adhesiveness of the picture-ironing film and a carrier is improved by using hot melt adhesive powder conventionally is overcome, the hot melt adhesive solution can be stably adsorbed by directly spraying, the adhesive force is good, the condition of glue overflow is avoided, and the precision and the processing efficiency of a picture-ironing film finished product are improved.
2. The filler is modified by using a long-chain alkyl silane coupling agent, a compound containing long-chain ether groups and a surfactant, so that the crosslinking dispersion stability of the filler in a water-based polyurethane resin system is improved, a stable netlike crosslinking structure is formed, the adsorption stability of the prepared directly-jet ink-absorbing layer is further improved, and the adsorptivity of the prepared pyrograph film to printing ink and hot melt adhesive is improved.
3. The use ratio and the particle size ratio of the fumed silica and the spherical alumina are controlled, so that the interval of gaps formed between adjacent particles of the filler is increased, the porosity of the prepared direct-jet ink-absorbing layer is improved, the surface of the prepared direct-jet ink-absorbing layer can form an uneven surface with a micropore structure, and the adsorptivity of the prepared pyrograph film is further improved.
4. The castor oil modified polyol and the propylene glycol block polyether with the optimal proportion are used as diluents, the diglycol and the Si-69 silane coupling agent with the optimal proportion are used as stabilizers, and the castor oil modified polyol and the propylene glycol block polyether with the optimal proportion produce good synergistic effect, so that the ink carrying capacity of the prepared hot melt adhesive film and the adsorption stability of the hot melt adhesive can be improved.
5. The preparation process is simple, and the prepared hot melt adhesive film has uniform micropore structure surface, good ink carrying capacity and good hot melt adhesive adsorption stability.
Detailed Description
The present application will be described in further detail with reference to examples.
The following are sources and specifications of some of the raw materials used in the preparation examples and examples of the present application, which are commercially available, and include, but are not limited to, the specific models and manufacturers disclosed below, and raw materials having the same specification parameters and properties may be used:
1. Aqueous polyurethane resin: brand mic Tu Rui, model: MP-6415, 30% content, 1.06+ -0.02 g/cm 3;
2. Polyglycerol glycidyl ether: content 99%, CAS number: 25038-04-4;
3. Castor oil modified polyol: brand: the startup organism has model CY-006, hydroxyl content of 20-50% and viscosity of 100-200; 4. propylene glycol block polyether: polyether L-62.
Preparation example of adsorption packing
Preparation example 1
Preparation example 1 discloses an adsorption filling material, which is prepared by the following steps:
adding 0.5kgTO-8 serving as a surfactant into 10kg of water, adding 5kg of fumed silica with the particle size of 50-100nm serving as a filler, uniformly dispersing, adding 0.5kg of hexadecyl trimethoxy silane serving as a long-chain silane coupling agent and 0.3kg of polyethylene glycol diglycidyl ether serving as a compound containing long-chain ether groups, stirring at the temperature of 40 ℃ for 30min, filtering, stirring at the temperature of 80 ℃ at the rotating speed of 300r/min, and drying for 40min to obtain the adsorption filler.
PREPARATION EXAMPLES 2-3
Preparation examples 2 to 3 differ from preparation example 1 in the amounts of raw materials and the preparation conditions, see in particular Table 1 below.
TABLE 1 raw materials amounts and preparation conditions of preparation examples 1 to 3
Preparation example 4
Preparation example 4 differs from preparation example 1 in that the filler in preparation example 4 is composed of fumed silica and spherical alumina in a weight ratio of 1:0.2, the fumed silica having a particle diameter of 50 to 100nm, the spherical alumina having a particle diameter of 400 to 500nm, and the other is the same as in preparation example 1.
Preparation example 5
Preparation example 5 differs from preparation example 1 in that the filler in preparation example 5 is composed of fumed silica and spherical alumina in a weight ratio of 1:0.5, the fumed silica having a particle size of 50 to 100nm, the spherical alumina having a particle size of 50 to 100nm, and the other is the same as in preparation example 1.
Preparation example 6
Preparation example 6 was different from preparation example 4 in that the polyethylene glycol diglycidyl ether was replaced with polyglycerol glycidyl ether in the same amount, and the other steps were the same as in preparation example 4.
Preparation example 7
Preparation example 7 differs from preparation example 6 in that the particle diameter of fumed silica is 50 to 100nm and the particle diameter of spherical alumina is 100 to 200nm.
Preparation of comparative example 1
Comparative preparation 1 was different from preparation 1 in that polyethylene glycol diglycidyl ether was replaced with hexadecyltrimethoxysilane in equal amount, and the other was the same as preparation 1.
Preparation of comparative example 2
Preparation comparative example 2 was different from preparation example 1 in that the long-chain alkyl silane coupling agent was replaced with ethyl trimethoxysilane in the same amount, and the other was the same as preparation example 1.
Preparation example of ink absorber
Preparation example 8
Preparation 8 discloses an ink absorber, which is prepared by the following steps:
A1, adding 4.5kg of aqueous polyurethane resin, 1kg of castor oil modified polyol serving as a diluent and 0.3kg of polyethylene glycol serving as a stabilizer into reaction equipment, stirring for 20min, and uniformly stirring to prepare a mixture A;
a2, adding 1.5kg of the adsorption filling material prepared in the preparation example 1 and 0.04kg of isophorone diisocyanate as a curing agent into the mixture A, stirring for 40min, and uniformly stirring to obtain the ink absorbent.
Preparation examples 8 to 10
Preparation examples 9 to 10 differ from preparation example 8 in the amount of raw materials and the preparation process, and in the adsorption fillers, see in particular table 2 below.
TABLE 2 raw materials used in preparation examples 8 to 10 and preparation process, adsorption filler sources table
PREPARATION EXAMPLES 11 to 14
Preparation examples 11 to 14 differ from preparation example 8 in the source of the adsorption packing material, see in particular table 3 below.
TABLE 3 Source list of adsorption packing for preparation examples 11-14
Preparation example 15
Preparation 15 differs from preparation 14 in that the diluent in preparation 15 is composed of castor oil-modified polyol and propylene glycol-block polyether in a weight ratio of 1:0.2, and the other is the same as preparation 14.
PREPARATION EXAMPLE 16
Preparation example 16 differs from preparation example 14 in that the diluent in preparation example 16 consists of castor oil-modified polyol and propylene glycol-block polyether in a weight ratio of 1:0.4, and the other is the same as preparation example 14.
Preparation example 17
Preparation example 17 differs from preparation example 15 in that the stabilizer in preparation example 17 is composed of diethylene glycol and Si-69 silane coupling agent in a weight ratio of 1:0.1, and the other is the same as preparation example 15.
PREPARATION EXAMPLE 18
Preparation example 18 differs from preparation example 15 in that the stabilizer in preparation example 18 is composed of diethylene glycol and Si-69 silane coupling agent in a weight ratio of 1:0.3, and the other is the same as preparation example 15.
Preparation of comparative example 3
Preparation comparative example 3 was different from preparation example 8 in that the stabilizer was replaced with the diluent in the same amount, and the other was the same as preparation example 17.
Preparation of comparative example 4
Preparation comparative example 4 differs from preparation example 8 in that the adsorption packing material was derived from preparation comparative example 1, and the other is the same as preparation example 8.
Preparation of comparative example 5
Preparation comparative example 5 is different from preparation example 8 in that the adsorption packing material is derived from preparation comparative example 2, and the other is the same as preparation example 8.
Examples
Example 1
Embodiment 1 discloses a hot melt adhesive's pyrograph membrane can directly spout, including laminating the back dead layer that sets gradually, PET layer, release layer and can directly spout ink absorption layer, wherein, the back dead layer is polytetrafluoroethylene coating, and the thickness of back dead layer is 10-20 mu m, and the thickness of PET layer is 25-35 mu m, and release layer is organic silicone oil coating, and the thickness of release layer is 10-20 mu m, can directly spout ink absorption layer and form by the solidification of ink absorber.
The hot melt adhesive-directly-sprayed hot melt adhesive hot dip coating film is prepared by the following steps:
s1, coating a back dummy agent on one surface of a PET layer, and drying to form a back dummy layer;
s2, coating a release agent on one surface of the PET layer, which is far away from the back dummy layer, and drying to form a release layer;
s3, coating the ink absorbent prepared in preparation example 8 on the surface of the release layer far away from the PET layer in a coating amount of 3.8g/m 2, and drying to form a directly-sprayable ink absorbent layer, wherein the drying temperature is 80 ℃ and the drying time is 1.5h, so as to prepare a hot-melt adhesive-capable hot-drawn film;
Wherein, the back dummy agent is DuPont 850N, the release agent is SiHai organosilicon film agent 630, and other parameters are conventional parameters.
Examples 2 to 3
Examples 2-3 differ from example 1 in the source and conditions of use of the ink absorber, see table 4 below.
TABLE 4 Source and use Condition differentiation Table for ink-absorbing Agents of examples 2-3
Examples 4 to 11
Examples 4-11 differ from example 1 in the source of the ink absorber, see in particular Table 5 below.
TABLE 5 Source list of ink-absorbers for examples 4-11
| Examples | Sources of ink-absorbing agents |
| Example 4 | PREPARATION EXAMPLE 11 |
| Example 5 | Preparation example 12 |
| Example 6 | Preparation example 13 |
| Example 7 | PREPARATION EXAMPLE 14 |
| Example 8 | Preparation example 15 |
| Example 9 | PREPARATION EXAMPLE 16 |
| Example 10 | Preparation example 17 |
| Example 11 | PREPARATION EXAMPLE 18 |
Comparative example
Comparative examples 1 to 3
Comparative examples 1-3 differ from example 1 in the source of the ink absorber, see in particular table 6 below.
TABLE 6 Source list of ink-absorbers of comparative examples 1-3
| Comparative example | Sources of ink-absorbing agents |
| Comparative example 1 | Preparation of comparative example 3 |
| Comparative example 2 | Preparation of comparative example 4 |
| Comparative example 3 | Preparation of comparative example 5 |
Performance test the hot drawn films prepared in examples 1 to 11 and comparative examples 1 to 3 of the present application were subjected to performance tests as follows:
(1) Inkjet printing test
Using a white ink printer, regulating the ink output to be 10ml/m 2 for printing, observing the ink absorption condition of a printing area, recording whether ink flows and the deformation condition of a printing pattern, and recording a test result;
(2) Hot melt adhesive spraying test
Using a white ink printer to adjust the ink output to be 5ml/M 2 for printing, forming a printing pattern on a directly-jet ink-absorbing layer, then melting polyurethane hot melt adhesive (commercially available, brand 3M, model TS 230) at 125 ℃, spraying the polyurethane hot melt adhesive to a printing pattern area by using the spraying quantity of 25g/M 2, curing at room temperature (25 ℃), observing whether glue overflows or not, performing an adhesive force test according to an adhesive force hundred-check test method, and detecting and recording a detection result;
the following are the performance test data for the hot drawn films of examples 1-11 and comparative examples 1-3, see in particular Table 7 below.
Table 7 Performance test data of the hot drawn films of examples 1 to 11 and comparative examples 1 to 3
It can be seen from the combination of examples 1 to 3 and examples 4 to 7, and comparative examples 2 to 3, and the combination of table 7 that the long-chain alkyl silane coupling agent, the compound containing a long-chain ether group, and the surfactant according to the present application were used to modify the fumed silica and the spherical alumina in a preferable ratio, and the prepared filler was applied to the ink-absorbent according to the present application, and the prepared directly-jet ink-absorbent layer had a larger porosity and adsorptivity, and the adsorption effect of the prepared hot-drawn film on the printing ink and the hot-melt adhesive was improved, and the occurrence of bleeding and gumming was reduced, while the compound containing a long-chain ether group in comparative example 2 was replaced with a short-chain silane coupling agent in an equal amount, and the adsorptivity of the prepared hot-melt adhesive to the printing ink and the hot-melt adhesive was reduced, and the gumming and gumming occurred, which was probably due to poor dispersion uniformity of the filler, the pores of the hot-drawn film were unevenly dispersed, and the gumming occurred.
By combining examples 7 and 8-11 and comparative example 1 and combining Table 7, it can be seen that the better proportions of castor oil modified polyol and propylene glycol block polyether of the present application are used as diluents, and the better proportions of diethylene glycol and Si-69 silane coupling agent are used as stabilizers, so that the prepared directly-jet ink-absorbing layer has a higher porosity and a more stable reticular crosslinked molecular structure, and can stably adsorb printing ink and hot melt adhesive adsorbed on the surface, so that the conditions of bleeding and overflow are not easy to occur, the patterns formed by printing are not easy to shrink and deform, the adhesiveness of the hot melt adhesive is also better, the equivalent amount of the stabilizers is replaced by the diluents in comparative example 1, and the adsorptivity of the prepared hot-drawn film to printing ink and hot melt adhesive is reduced, probably because the hot melt adhesive and the printing ink cannot be well leveled and dispersed without adding the stabilizers, and therefore, the diluents and the stabilizers of the present application have better synergism.
The present embodiment is only for explanation of the present application and is not to be construed as limiting the present application, and modifications to the present embodiment, which may not creatively contribute to the present application as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present application.
Claims (10)
1. The hot melt adhesive-containing picture-ironing film is characterized by comprising a back dummy layer, a PET layer, a release layer and a direct-injection ink-absorbing layer which are sequentially laminated, wherein the direct-injection ink-absorbing layer is formed by solidifying an ink-absorbing agent, and the ink-absorbing agent is prepared from the following raw materials in parts by weight:
45-65 parts of aqueous polyurethane resin
15-25 Parts of adsorption filling material
10-20 Parts of diluent
3-6 Parts of stabilizer
0.4-1 Part of curing agent;
The adsorption filling material is prepared by modifying a long-chain silane coupling agent, a compound containing long-chain ether groups and a surfactant.
2. The hot melt adhesive hot stamping film as described in claim 1, wherein the adsorbing filler is prepared by the steps of:
Adding 0.5-1.5 parts by weight of surfactant into 10-15 parts by weight of water, adding 5-8 parts by weight of filler, uniformly dispersing, adding 0.5-1 part by weight of long-chain silane coupling agent and 0.3-0.8 part by weight of compound containing long-chain ether groups, stirring at 40-60 ℃ for 30-60min, filtering, and drying to obtain the adsorption filler;
The filler is fumed silica and spherical alumina, the long-chain alkyl silane coupling agent is any one of dodecyl trimethoxy silane and hexadecyl trimethoxy silane, the compound containing long-chain ether group is polyglycerol glycidyl ether, and the surfactant is isomeric alcohol polyoxyethylene ether.
3. The hot melt adhesive directly sprayable picture film according to claim 2, wherein the weight ratio of fumed silica to spherical alumina is 1 (0.2-0.5).
4. A hot melt adhesive direct-injection type hot melt adhesive picture-ironing film according to claim 3, wherein the ratio of the particle size of the fumed silica to the particle size of the spherical alumina is 1 (1.5-2), and the particle size of the fumed silica is 50-100nm.
5. The hot melt adhesive directly-sprayable picture film according to claim 1, wherein the diluent comprises (0.2-0.4) castor oil modified polyol and propylene glycol block polyether.
6. The hot melt adhesive hot dip coating film according to claim 1, wherein the stabilizer comprises 1 (0.1-0.3) of diethylene glycol and a Si-69 silane coupling agent.
7. The hot melt adhesive hot melt film of claim 1, wherein the curing agent is a diisocyanate curing agent.
8. The hot melt adhesive picture film as claimed in any one of claims 1 to 7, wherein the ink absorbent is prepared by the steps of:
A1, adding aqueous polyurethane resin, a diluent and a stabilizer into reaction equipment, and uniformly stirring to prepare a mixture A;
a2, adding the adsorption filling material and the curing agent into the mixture A, and uniformly stirring to obtain the ink absorbent.
9. A process for preparing a hot melt adhesive directly sprayable drawn film according to any of claims 1 to 8, comprising the steps of:
s1, coating a back dummy agent on one surface of a PET layer, and drying to form a back dummy layer;
s2, coating a release agent on one surface of the PET layer, which is far away from the back dummy layer, and drying to form a release layer;
s3, coating an ink absorbent on one surface of the release layer, which is far away from the PET layer, and drying to form a direct-injection ink absorbent layer, so as to prepare the hot melt adhesive pyrograph film.
10. The process for preparing a hot melt adhesive film according to claim 9, wherein the coating amount of the ink absorbent in the step S3 is 3.8-5g/m 2, the drying temperature is 80-100 ℃, and the drying time is 1.5-2.5h.
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| CN213472586U (en) * | 2020-08-25 | 2021-06-18 | 青艺（福建）烫画科技有限公司 | Washable cold transfer printing film |
| WO2021238969A1 (en) * | 2020-05-28 | 2021-12-02 | 珠海天威新材料股份有限公司 | Coating composition for pet film, pet transfer film, and preparation method therefor and use thereof |
| CN115785749A (en) * | 2022-12-09 | 2023-03-14 | 中国化工株洲橡胶研究设计院有限公司 | Water-based heat transfer film coating and preparation method and application thereof |
| CN116065422A (en) * | 2022-12-20 | 2023-05-05 | 悦声纸业(中国)有限公司 | Digital white ink hot drawing paper |
| CN117247716A (en) * | 2023-09-06 | 2023-12-19 | 青艺（福建）烫画科技有限公司 | White ink hot-stamping printing film and ink-absorbing coating thereof |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021238969A1 (en) * | 2020-05-28 | 2021-12-02 | 珠海天威新材料股份有限公司 | Coating composition for pet film, pet transfer film, and preparation method therefor and use thereof |
| CN213472586U (en) * | 2020-08-25 | 2021-06-18 | 青艺（福建）烫画科技有限公司 | Washable cold transfer printing film |
| CN115785749A (en) * | 2022-12-09 | 2023-03-14 | 中国化工株洲橡胶研究设计院有限公司 | Water-based heat transfer film coating and preparation method and application thereof |
| CN116065422A (en) * | 2022-12-20 | 2023-05-05 | 悦声纸业(中国)有限公司 | Digital white ink hot drawing paper |
| CN117247716A (en) * | 2023-09-06 | 2023-12-19 | 青艺（福建）烫画科技有限公司 | White ink hot-stamping printing film and ink-absorbing coating thereof |
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