CN110667133A - Processing technology of film winding reel - Google Patents
Processing technology of film winding reel Download PDFInfo
- Publication number
- CN110667133A CN110667133A CN201910900622.2A CN201910900622A CN110667133A CN 110667133 A CN110667133 A CN 110667133A CN 201910900622 A CN201910900622 A CN 201910900622A CN 110667133 A CN110667133 A CN 110667133A
- Authority
- CN
- China
- Prior art keywords
- parts
- sleeve body
- foaming
- paper
- reel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
- B29C69/001—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore a shaping technique combined with cutting, e.g. in parts or slices combined with rearranging and joining the cut parts
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/08—Copolymers of ethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2421/00—Characterised by the use of unspecified rubbers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Storage Of Web-Like Or Filamentary Materials (AREA)
Abstract
The invention discloses a processing technology of a film winding reel, which adopts a sleeve body material with specific comprehensive multiplying power to foam and form a foaming sleeve body, and the foaming sleeve body is sleeved on a paper reel while the foaming sleeve body is hot, and is cut and polished after positioning and cold shrinkage to form a paper reel finished product. According to the invention, the EVA sleeve body is seamlessly sleeved on the periphery of the paper scroll, no splicing seam exists on the formed scroll, the internal stress of the paper scroll is uniform, the deformation is not easy to generate, and the service life is prolonged. The cold shrinkage and tight compounding between the sleeve body and the paper scroll is realized through the body proportion of the sleeve body and the paper scroll and the comprehensive multiplying power adjustment of the sleeve body material, and the matching reliability between the sleeve body and the paper scroll is met. The process design is reasonable, the production and the molding of the paper scroll are easy, and the method is suitable for popularization and application.
Description
Technical Field
The invention relates to a processing technology of a film winding reel, and belongs to the technical field of a paper reel outer surface forming technology.
Background
In industrial production, there are a large number of film products such as window films, adhesive tape films, etc., and these films are wound around a winding roll to form a film roll.
The material of the reel is various, and for coiling and transportation, the reel needs to be light enough and possess certain structural strength, and the paper reel possesses light in weight and environmental protection advantage, but its structural strength is slightly low.
At present prior art is at the periphery shaping EVA layer of paper spool, and this EVA layer can increase the structural strength of paper spool, possesses functions such as dampproofing, buffering simultaneously.
The EVA layer of present cuts the back bonding on the paper spool, and it possesses axial concatenation seam, and this concatenation seam can become the deformation breakthrough portion of paper spool, and in long-term use promptly, the paper spool can produce deformation in concatenation seam department, and in addition, the long-term operation of paper spool can produce the inflation of weing, leads to this concatenation seam to strut phenomenon such as EVA layer drops even, influences the life of paper spool.
Disclosure of Invention
The invention aims to solve the defects of the prior art, and provides a processing technology of a film winding reel, aiming at the problem that the service life of the paper winding reel is influenced by the splicing seam of the traditional EVA layer.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a processing technology of a film winding reel comprises the following steps:
s1, selecting the material of the sleeve body,
selecting the following components in parts by mass: 30-60 parts of ethylene-vinyl acetate copolymer, 20-50 parts of polyolefin elastomer, 20-50 parts of rubber, 10-15 parts of filler, 4-8 parts of foaming agent, 1-2 parts of bridging agent and 1-3 parts of processing aid;
s2, manufacturing a sleeve body mould,
manufacturing a sleeve body die according to the outer diameter of the paper roll, wherein the inner diameter of a sleeve body cavity of the sleeve body die is smaller than the outer diameter of the paper roll, and the difference between the outer diameter and the inner diameter of the sleeve body cavity is 1-3 mm;
s3, injection molding the sleeve body,
heating the mould to 165-185 ℃, preserving heat, adding the material selected in the step S1 into the material cabin, heating to 80-120 ℃, performing injection molding operation,
stopping materials and closing the mold after the injection molding is finished, maintaining the heat preservation temperature of the mold for 5-10 min, and opening the mold to form a foaming sleeve body;
the socket joint operation of the S4 is carried out,
sleeving the foaming sleeve body on a paper reel while the foaming sleeve body is hot, fixing two ends of the foaming sleeve body, cooling to room temperature, and shrinking the foaming sleeve body to attach the foaming sleeve body on the paper reel to form a paper reel blank;
s5, cutting the glass to obtain the finished product,
cutting two ends of the paper reel blank;
s6, grinding the mixture in a whole circle,
and polishing the periphery of the cut paper reel to form a finished reel.
Preferably, in step S1, the following components are selected according to parts by mass: 50 parts of ethylene-vinyl acetate copolymer, 30 parts of polyolefin elastomer, 30 parts of rubber, 10 parts of filler, 6 parts of foaming agent, 2 parts of bridging agent and 1 part of processing aid.
Preferably, in step S1, the following components are selected according to parts by mass: 60 parts of ethylene-vinyl acetate copolymer, 40 parts of polyolefin elastomer, 40 parts of rubber, 15 parts of filler, 8 parts of foaming agent, 1 part of bridging agent and 2 parts of processing aid.
Preferably, in the step S1, the overall magnification of the jacket body material is 1.2 times to 1.85 times.
Preferably, in step S6, the capillary pores on the outer surface of the finished reel are less than or equal to 0.3 mm.
The invention has the following beneficial effects:
1. the EVA sleeve body is seamlessly sleeved on the periphery of the paper roll, no splicing seam exists on the roll after forming, the internal stress of the paper roll is uniform, deformation is not easy to generate, and the service life is prolonged.
2. The cold shrinkage and tight compounding between the sleeve body and the paper scroll is realized through the body proportion of the sleeve body and the paper scroll and the comprehensive multiplying power adjustment of the sleeve body material, and the matching reliability between the sleeve body and the paper scroll is met.
3. The process design is reasonable, the production and the molding of the paper scroll are easy, and the method is suitable for popularization and application.
Detailed Description
The invention provides a processing technology of a film winding reel. The technical solutions of the present invention are described in detail below to make them easier to understand and master.
A processing technology of a film winding reel comprises the following steps:
s1 material selection of the sleeve:
selecting the following components in parts by mass: 30-60 parts of ethylene-vinyl acetate copolymer, 20-50 parts of polyolefin elastomer, 20-50 parts of rubber, 10-15 parts of filler, 4-8 parts of foaming agent, 1-2 parts of bridging agent and 1-3 parts of processing aid.
The materials are selected as the formula of the paper roll outer sleeve, and the sleeve body formed by foaming has better moisture resistance and polishing property, thereby meeting the application requirement of the outer surface of the film roll. The comprehensive multiplying power of the sleeve body material is 1.2-1.85 times.
S2 manufacturing of sleeve dies:
the sleeve body die is manufactured according to the outer diameter of the paper roll, the inner diameter of a sleeve body cavity of the sleeve body die is smaller than the outer diameter of the paper roll, and the difference between the outer diameter and the inner diameter of the sleeve body cavity is 1-3 mm.
The inner diameter of the foaming sleeve body formed by the sleeve cavity is smaller than the outer diameter of the paper scroll, and after the foaming sleeve body is subjected to injection foaming molding, the foaming sleeve body has certain elastic tension, is fastened on the paper scroll after being elastically stretched in the sleeving process, is sleeved on the periphery of the paper scroll when the foaming sleeve body is hot, has better tension, and has certain shrinkage after being cooled, so that the sleeving and fastening are ensured.
Specifically, the outer diameter of the paper reel is R, the inner diameter of the foaming sleeve body is 0.8-0.95R, namely the inner diameter of the foaming sleeve body is maintained in a reasonable elastic expansion range size, when the inner diameter is lower than 0.8R, the expansion sleeve body is easily expanded to be too thin or even cracks are generated in the expansion sleeve process, and when the inner diameter is larger than 0.95R, the matching force between the foaming sleeve body and the paper reel is not firm enough after the foaming sleeve body is cooled and contracted, and displacement is easily generated in the later polishing operation.
S3, injection molding of the sleeve body:
heating the mould to 165-185 ℃, preserving heat, adding the material selected in the step S1 into the material cabin, heating to 80-120 ℃, performing injection molding operation,
and stopping materials and closing the mold after the injection molding is finished, keeping the heat preservation temperature of the mold for 5-10 min, and opening the mold to form the foaming sleeve body.
The injection molding parameters of the foaming sleeve body are provided, the forming step can realize the forming of the foaming sleeve body, and the foaming sleeve body has the characteristic of compact structure and plays a role in water resistance and moisture resistance.
S4 socket joint operation:
and sleeving the foaming sleeve body on the paper scroll while the foaming sleeve body is hot, fixing two ends of the foaming sleeve body, cooling to room temperature, and shrinking the foaming sleeve body to attach the foaming sleeve body on the paper scroll to form a paper scroll blank.
The foaming sleeve body is sleeved when the foaming sleeve body is hot, the foaming sleeve body has better ductility after being demoulded, the sleeving operation between the foaming sleeve body and a paper scroll is convenient to realize, and the internal structure of the foaming sleeve body is uniform in the sleeving and expanding process.
S5 cutting:
and cutting two ends of the paper reel blank, and performing cutting operation according to the required size.
S6 polishing in a whole circle:
and polishing the periphery of the cut paper reel to form a finished reel.
The pore size of the outer surface of the finished product reel after polishing is less than or equal to 0.3mm, so that the surface is very smooth, the requirement of rolling a film body is met, and the method is particularly suitable for automobile film winding.
Example one
Selecting the following components in parts by mass: 50 parts of ethylene-vinyl acetate copolymer, 30 parts of polyolefin elastomer, 30 parts of rubber, 10 parts of filler, 6 parts of foaming agent, 2 parts of bridging agent and 1 part of processing aid.
Example two
Selecting the following components in parts by mass: 60 parts of ethylene-vinyl acetate copolymer, 40 parts of polyolefin elastomer, 40 parts of rubber, 15 parts of filler, 8 parts of foaming agent, 1 part of bridging agent and 2 parts of processing aid.
The finished product reel manufactured by adopting the raw materials of the first embodiment and the second embodiment according to the process has the outer surface capillary pores of less than or equal to 0.25mm after being polished, namely the foamed sleeve body has a uniform structure, and the paper reel and the foamed sleeve body do not have relative displacement and loosening phenomena in the polishing process.
Through the above description, the processing technology of the film winding reel disclosed by the invention has the advantages that the EVA sleeve body is seamlessly sleeved on the periphery of the paper reel, no splicing seam exists on the formed reel, the internal stress of the paper reel is uniform, the deformation is not easy to generate, and the service life is prolonged. The cold shrinkage and tight compounding between the sleeve body and the paper scroll is realized through the body proportion of the sleeve body and the paper scroll and the comprehensive multiplying power adjustment of the sleeve body material, and the matching reliability between the sleeve body and the paper scroll is met. The process design is reasonable, the production and the molding of the paper scroll are easy, and the method is suitable for popularization and application.
The technical solutions of the present invention are fully described above, it should be noted that the specific embodiments of the present invention are not limited by the above description, and all technical solutions formed by equivalent or equivalent changes in structure, method, or function according to the spirit of the present invention by those skilled in the art are within the scope of the present invention.
Claims (5)
1. The processing technology of the film winding reel is characterized by comprising the following steps:
s1, selecting the material of the sleeve body,
selecting the following components in parts by mass: 30-60 parts of ethylene-vinyl acetate copolymer, 20-50 parts of polyolefin elastomer, 20-50 parts of rubber, 10-15 parts of filler, 4-8 parts of foaming agent, 1-2 parts of bridging agent and 1-3 parts of processing aid;
s2, manufacturing a sleeve body mould,
manufacturing a sleeve body die according to the outer diameter of the paper roll, wherein the inner diameter of a sleeve body cavity of the sleeve body die is smaller than the outer diameter of the paper roll, and the difference between the outer diameter and the inner diameter of the sleeve body cavity is 1-3 mm;
s3, injection molding the sleeve body,
heating the mould to 165-185 ℃, preserving heat, adding the material selected in the step S1 into the material cabin, heating to 80-120 ℃, performing injection molding operation,
stopping materials and closing the mold after the injection molding is finished, maintaining the heat preservation temperature of the mold for 5-10 min, and opening the mold to form a foaming sleeve body;
the socket joint operation of the S4 is carried out,
sleeving the foaming sleeve body on a paper reel while the foaming sleeve body is hot, fixing two ends of the foaming sleeve body, cooling to room temperature, and shrinking the foaming sleeve body to attach the foaming sleeve body on the paper reel to form a paper reel blank;
s5, cutting the glass to obtain the finished product,
cutting two ends of the paper reel blank;
s6, grinding the mixture in a whole circle,
and polishing the periphery of the cut paper reel to form a finished reel.
2. The process of claim 1, wherein:
in step S1, selecting, in parts by mass: 50 parts of ethylene-vinyl acetate copolymer, 30 parts of polyolefin elastomer, 30 parts of rubber, 10 parts of filler, 6 parts of foaming agent, 2 parts of bridging agent and 1 part of processing aid.
3. The process of claim 1, wherein:
in step S1, selecting, in parts by mass: 60 parts of ethylene-vinyl acetate copolymer, 40 parts of polyolefin elastomer, 40 parts of rubber, 15 parts of filler, 8 parts of foaming agent, 1 part of bridging agent and 2 parts of processing aid.
4. The process for manufacturing a film winding reel according to any one of claims 1 to 3, wherein:
in the step S1, the comprehensive magnification of the jacket body material is 1.2 times to 1.85 times.
5. The process of claim 1, wherein:
in the step S6, the capillary pores on the outer surface of the finished product reel are less than or equal to 0.3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910900622.2A CN110667133A (en) | 2019-09-23 | 2019-09-23 | Processing technology of film winding reel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910900622.2A CN110667133A (en) | 2019-09-23 | 2019-09-23 | Processing technology of film winding reel |
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| Publication Number | Publication Date |
|---|---|
| CN110667133A true CN110667133A (en) | 2020-01-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910900622.2A Pending CN110667133A (en) | 2019-09-23 | 2019-09-23 | Processing technology of film winding reel |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5918201B2 (en) * | 1976-05-24 | 1984-04-26 | 住友電気工業株式会社 | heat shrinkable tube |
| CN105080071A (en) * | 2015-07-22 | 2015-11-25 | 张家港宏利橡塑制品有限公司 | Hollow foam roller and machining technology thereof |
| CN105984756A (en) * | 2015-02-10 | 2016-10-05 | 苏州天裕塑胶有限公司 | Winding core pipe |
| CN208603507U (en) * | 2018-08-01 | 2019-03-15 | 河北金力新能源科技股份有限公司 | A kind of compound tube core of heatproof resistance to deformation |
| CN109911712A (en) * | 2019-04-10 | 2019-06-21 | 昆山瑞广和电子有限公司 | A kind of seamless separator tube of EVA for film class product packaging |
| CN110040581A (en) * | 2019-05-14 | 2019-07-23 | 无锡泰极纸业有限公司 | A kind of core technique and its core |
-
2019
- 2019-09-23 CN CN201910900622.2A patent/CN110667133A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5918201B2 (en) * | 1976-05-24 | 1984-04-26 | 住友電気工業株式会社 | heat shrinkable tube |
| CN105984756A (en) * | 2015-02-10 | 2016-10-05 | 苏州天裕塑胶有限公司 | Winding core pipe |
| CN105080071A (en) * | 2015-07-22 | 2015-11-25 | 张家港宏利橡塑制品有限公司 | Hollow foam roller and machining technology thereof |
| CN208603507U (en) * | 2018-08-01 | 2019-03-15 | 河北金力新能源科技股份有限公司 | A kind of compound tube core of heatproof resistance to deformation |
| CN109911712A (en) * | 2019-04-10 | 2019-06-21 | 昆山瑞广和电子有限公司 | A kind of seamless separator tube of EVA for film class product packaging |
| CN110040581A (en) * | 2019-05-14 | 2019-07-23 | 无锡泰极纸业有限公司 | A kind of core technique and its core |
Non-Patent Citations (1)
| Title |
|---|
| 贾润礼: "《新型注塑模设计》", 31 July 2006, 北京：国防工业出版社 * |
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