CN107962855B - A draw sword technology for protection film production - Google Patents
A draw sword technology for protection film production Download PDFInfo
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- CN107962855B CN107962855B CN201711412060.4A CN201711412060A CN107962855B CN 107962855 B CN107962855 B CN 107962855B CN 201711412060 A CN201711412060 A CN 201711412060A CN 107962855 B CN107962855 B CN 107962855B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/0046—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by constructional aspects of the apparatus
- B32B37/0053—Constructional details of laminating machines comprising rollers; Constructional features of the rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
- B32B37/1284—Application of adhesive
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0004—Cutting, tearing or severing, e.g. bursting; Cutter details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/10—Removing layers, or parts of layers, mechanically or chemically
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- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Adhesive Tapes (AREA)
Abstract
The invention discloses a knife extraction process for producing a protective film, which comprises the following steps: step 1: compounding the blue film, the PET film with the adhesive and the double-sided adhesive; step 2: pasting a layer of soft silica gel film on the double-sided adhesive, and then carrying out outline die cutting; and step 3: lifting the profile waste; and 4, step 4: lifting the soft silica gel film and the double-sided adhesive tape on the inner side of the die-cutting boundary; and 5: lifting the double-sided adhesive and the blue film waste outside the die-cutting boundary; step 6: compounding and sticking the base paper on the blue film; and 7: and (3) lifting away the PET film with the adhesive to form a finished product, firstly sticking the blue film on the inner side of the die-cutting boundary, then sticking a layer of pattern beautifying paper on the residual double-sided adhesive on the outer side of the die-cutting boundary, wherein the pattern beautifying paper and the blue film on the inner side cannot be stuck with each other, when the pattern beautifying paper is torn off, the double-sided adhesive on the outer side of the die-cutting boundary and the blue film waste can be lifted away, and only the blue film on the inner side of the die-.
Description
Technical Field
The invention relates to the field of production of protective films, in particular to a knife extraction process for production of protective films.
Background
In order to prevent the screen of the digital product from being scratched in the using process, a protective film is required to be pasted on the screen of the digital product, and the protective film has the advantages of high surface hardness and high transparency.
The raw materials of the protective film are divided into a PET black film, a blue film, release paper and the like, and the protective film made of the blue film raw material mainly comprises base paper and the blue film, wherein the base paper and the blue film are mutually bonded through glue. In the production process of the protective film, a lining material is required to be firstly adhered to the surface of the blue film, the lining material is firstly torn off during processing to expose the adhesive surface, then the protective film shown in figure 1 is finally formed through bonding and die cutting on a rotary die cutting machine, and a piece of base paper 5, a layer of adhesive 6 compounded on the base paper and the blue film 2 are sequentially arranged from top to bottom in figure 1.
In the process of preparing the protective film in the prior art, a raw material blue film is a strip-shaped film with a large width, the raw material blue film is bonded with a lining, and then is subjected to die cutting to form a blue film with a required specification, a formed blue film array is distributed on the lining and is densely arranged, then the outline shape of a mobile phone screen or other digital screens needs to be formed, after the die cutting, blue film waste (the blue film outside a die cutting boundary is the blue film waste) on the lining needs to be torn off, the blue film with the required specification is reserved, and the tearing process is as follows: firstly, a layer of pattern paper is adhered on a blue film, then the pattern paper is torn off and the blue film waste is adhered away, but the specification of the blue film is small and is similar to that of the waste, the adhesion strength of the lining material to the blue film is equivalent to that of the lining material to the waste, and the formed blue film is easily adhered away together in the process of adhering the pattern paper.
Disclosure of Invention
The invention aims to provide a technology of an extraction knife for producing a protective film, which has the advantage that a formed blue film is not easy to be extracted along with waste materials in the process of extracting the waste materials from a lining.
The technical purpose of the invention is realized by the following technical scheme: an extraction knife process for production of a protective film comprises the following steps: step 1: compounding the blue film, the PET film with the adhesive and the double-sided adhesive; step 2: pasting a layer of soft silica gel film on the double-sided adhesive, and then carrying out outline die cutting; and step 3: lifting the profile waste; and 4, step 4: lifting the soft silica gel film and the double-sided adhesive tape on the inner side of the die-cutting boundary; and 5: lifting the double-sided adhesive and the blue film waste outside the die-cutting boundary; step 6: compounding and sticking the base paper on the blue film; and 7: and lifting the PET film with the adhesive to form a finished product.
Through the technical scheme, the PET film with the adhesive can be used as a carrier to carry and transfer the blue film and intermediate materials needed in the whole process, so that continuous work is kept; the method comprises the steps of firstly pasting a soft silica gel film on a double-sided adhesive, then carrying out die cutting, lifting the soft silica gel film positioned on the outer side of a die cutting boundary away after the die cutting, then lifting the soft silica gel film and the double-sided adhesive on the inner side of the die cutting boundary away by using masking paper, when the masking paper is pasted on the double-sided adhesive on the outer side of the die cutting boundary for the second time, forming a gap between the masking paper and a blue film on the inner side of the die cutting boundary, wherein the masking paper cannot be bonded with the blue film on the inner side of the die cutting boundary, the double-sided adhesive and the blue film waste on the outer side of the die cutting boundary can be lifted away when the masking paper is lifted away, and only the blue film on the inner side of the die.
The invention is further configured to: before the profile waste is lifted away, the profile waste is wound on a material collecting roller.
Through above-mentioned technical scheme, can carry out the rolling to the profile waste material when receiving the material roller and rotating, need not artifically tear the profile waste material off, improve work efficiency, reduce staff's working strength.
The invention is further configured to: after the beautiful line paper is adhered to the soft silica gel film, the beautiful line paper is extruded towards the direction close to the blue film so as to increase the bonding strength between the beautiful line paper and the soft silica gel film and between the soft silica gel film and the double-sided adhesive tape.
Through above-mentioned technical scheme, receive the extrusion back between beautiful line paper and the soft silica gel membrane and between soft silica gel membrane and the double faced adhesive tape, bonding strength between each other improves, can carry away soft silica gel membrane and double faced adhesive tape after tearing beautiful line paper.
The invention is further configured to: before the double-sided adhesive on the inner side of the die-cutting boundary and the soft silica gel film on the inner side of the die-cutting boundary are lifted away, the textured paper is wound on a material collecting roller.
Through above-mentioned technical scheme, can carry out the rolling to beautiful line paper when receiving the material roller and rotating, need not artifically tear beautiful line paper, improve work efficiency, reduce staff's working strength.
The invention is further configured to: after the finished product is formed, the finished product is wound on a receiving roller.
Through above-mentioned technical scheme, the receipts material roller can carry out automatic rolling to the finished product, is convenient for collect the finished product.
A press roll of a circular die cutting machine for the knife extraction process comprises an upper press roll and a lower press roll, wherein the outer cylindrical surface of the upper press roll is fixedly connected with at least two convex blocks, the convex blocks are uniformly distributed around the central axis of the upper press roll, the distance s between the cylindrical surface of the upper press roll and the cylindrical surface of the lower press roll is greater than the total thickness b of a first composite film and a soft silicone film, and the distance between the cylindrical surface of the convex blocks and the cylindrical surface of the lower press roll is less than the total thickness b of the first composite film and the soft silicone film; when the upper pressing roller and the lower pressing roller work, the convex block can extrude the soft silica gel film on the inner side of the die cutting boundary, and the convex block is positioned on the inner side of the die cutting boundary when the soft silica gel film is extruded.
Through the technical scheme, the masking paper is positioned between the lug and the soft silica gel film, the lug can extrude the soft silica gel film on the inner side of the die-cutting boundary, the pressure between the masking paper of the soft silica gel film and the pressure between the soft silica gel film and the double-sided adhesive are increased, the bonding strength between the masking paper and the soft silica gel film as well as between the soft silica gel film and the double-sided adhesive is increased, the soft silica gel film and the double-sided adhesive on the inner side of the die-cutting boundary can be adhered away when the masking paper is torn off, the blue film on the inner side of the die-cutting boundary is exposed outside, a certain distance is reserved between the upper surface of the blue film on the inner side of the die-cutting boundary and the upper surface of the double-sided adhesive on the outer side of the die-cutting boundary, the whole masking paper can be adhered to the surface of the double-sided adhesive in the next extraction procedure, the whole masking paper cannot be adhered to the blue film on the, only the blue film remains inside the die cut boundary.
The invention is further configured to: and the edge of one surface of the convex block, which is far away from the upper compression roller, is provided with a round angle.
Through the technical scheme: when the lug extrudees soft silica gel film, the beautiful line paper presss from both sides between lug and soft silica gel film, the beautiful line paper of the edge of lug contacts with soft silica gel film's surface earlier and extrudes each other, fillet surface can with beautiful line paper surface relative slip, can reduce the frictional force between lug edge and the beautiful line paper, avoid the lug to scrape and move beautiful line paper and lead to the soft silica gel film side extrusion cross cutting boundary outside of beautiful line paper tape moving die side limit inboard, the soft silica gel film in cross cutting boundary inboard probably drives the soft silica gel film in cross cutting boundary outside after the soft silica gel film in the outside extrudees mutually, this can influence next extraction technology.
The invention is further configured to: one side of the convex block, which is far away from the upper pressing roller, is a cylindrical surface, and the central axis of the cylindrical surface of the convex block is coincided with the central axis of the upper pressing roller.
Through the technical scheme: in the process that the soft silica gel membrane is extruded to the lug, the masking paper is clamped between the lug and the soft silica gel membrane, the surface of the soft silica gel membrane can move relative to the lug along the tangential direction of the cylindrical surface of the lug, and the friction force between the lug and the masking paper is reduced.
In conclusion, the invention has the following beneficial effects:
1. the double-sided adhesive tape on the inner side of the die-cutting boundary is adhered and removed by the soft silicone film, and then the beautiful line paper is adhered to the double-sided adhesive tape on the outer side of the die-cutting boundary, so that a gap is formed between the beautiful line paper and the blue film on the inner side of the die-cutting boundary and cannot be adhered to the blue film on the inner side, and the double-sided adhesive tape on the outer side of the die-cutting boundary and the blue film on the inner side of the die-cutting boundary can be lifted away after the beautiful line paper;
2. the beautiful line paper is extruded towards the direction close to the blue film, so that the bonding strength between the beautiful line paper and the soft silica gel film and between the soft silica gel film and the double-sided adhesive tape can be increased, and the soft silica gel film and the double-sided adhesive tape can be taken away together when the beautiful line paper is torn off;
3. the convex block can extrude the soft silica gel film on the inner side of the die cutting boundary, the pressure between the beautiful line paper of the soft silica gel film and the pressure between the soft silica gel film and the double-sided adhesive can be increased, and the bonding strength between the beautiful line paper and the soft silica gel film and between the soft silica gel film and the double-sided adhesive is increased, so that the soft silica gel film and the double-sided adhesive on the inner side of the die cutting boundary can be adhered away when the beautiful line paper is torn off.
Drawings
FIG. 1 is a schematic view of a protective film structure in the prior art;
FIG. 2 is a schematic diagram of an extraction knife process;
FIG. 3 is a schematic representation embodying a first composite membrane structure;
FIG. 4 is a schematic representation embodying a second composite membrane structure;
FIG. 5 is a schematic representation of a third composite membrane construction;
FIG. 6 is a schematic structural view of a finished product produced by the present process;
FIG. 7 is a schematic view showing the structure of an upper press roll and a lower press roll;
FIG. 8 is a cross-sectional view taken at A-A of FIG. 7;
fig. 9 is a partial enlarged view at B in fig. 7.
In the figure, 1, double-sided adhesive tape; 2. a blue film; 3. glue on the glue surface of the PET film with the glue; 4. a PET film; 5. base paper; 6. a layer of glue is compounded on the base paper; 7. an upper compression roller; 8. a lower pressing roller; 9. a bump; 91. round corners; 10. beautifying paper; 101. a soft silicone membrane.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example (b): a knife extracting process for producing a protective film is carried out on a rotary die-cutting machine as shown in figure 2 (figure 2 is a view of rotating 90 degrees in a counterclockwise direction and then placing the protective film). The rotary die-cutting machine comprises a plurality of rotating rollers and a plurality of tool apron. The rotating rollers are divided into two main types, one is a raw material roller which is used for placing various film raw materials; the other type is the receipts material roller, rolls up various films and waste material thereof and retrieves at the rotation in-process to replace the manual work to tear the waste material, improve work efficiency, reduce workman's working strength. The cutter holder is provided with a roll shaft, the roll shaft is provided with a cutter, and the roll shaft pulls various films in the rotating process, so that the various films are converged on the roll shaft from different raw material rollers for adhesion, and are die-cut by the cutter to form the outline of the screen of the digital product.
In the process of producing the protective film by using the rotary die cutting machine, since many raw materials are films with adhesive tapes and adhered to the lining, such as blue films 2 (see fig. 3), PET black films, release paper and the like, before the films are adhered to other films, the lining with the adhesive tapes needs to be torn off, and the adhesive surface is exposed so as to be adhered to other films through the adhesive surface. The torn lining material is firstly wound on a material receiving roller manually and then is wound and recycled through the rotation of the material receiving roller.
And in the process of conveying after the roll shaft rotates, a certain layer of film (surface layer or bottom layer) needs to be torn off under some conditions by the bonded composite film, a certain layer of the composite film is firstly pulled out by manpower in the initial production process and wound on the corresponding material receiving roller, and when the die cutting machine is started, the material receiving roller is controlled to rotate, so that the layer can be continuously rolled and recovered.
A plurality of guide rollers are used in the transfer of the film, and are mainly used for guiding the film while being transferred.
The process requires a plurality of rotating rollers, which are designated as Q1, Q2 and Q3 … … for convenience of description.
With reference to fig. 3, wound on Q2 is a double-sided adhesive tape 1, the adhesive side of the double-sided adhesive tape 1 faces downward; the PET film 4 with glue is wound on the Q14, and the glue surface of the PET film 4 with glue faces upwards; blue membrane 2, double faced adhesive tape 1 and area glue PET membrane 4 all lead to first blade holder G1, do not install the cutter on the first blade holder and carry out the cross cutting, double faced adhesive tape 1's glue face bonds with blue membrane 2 upper surface mutually, area glue PET membrane 4 bonds with blue membrane 2's lower surface mutually, pass first blade holder G1 back, the PET sizing material above the double faced adhesive tape 1 leads to Q3 and is carried away by Q3, the first complex film structure of formation is shown in fig. 3, from top to bottom be double faced adhesive tape 1 in proper order, blue membrane 2, glue 3 on the area glue PET membrane glue face, area glue PET membrane 4.
Soft silica gel films are wound on the Q15, the first composite film is led to the second knife holder G2, and before entering the second knife holder G2, the soft silica gel films bypass the guide roller to be bonded with the upper adhesive surface of the double-sided adhesive 1 and then enter the second knife holder G2; the second knife holder G2 is provided with a first knife tool T1, the cutting edge of the first knife tool T1 is in a frame shape protruding out of the surface of the roller shaft, the shape of the frame body is the same as the shape of the outer contour of the screen of the digital product, and the frame body is sequentially cut into the soft silicone film, the double-sided adhesive tape 1 and the blue film 2 to the upper surface of the adhesive surface of the PET film with adhesive 4.
After the first composite film penetrates out of the second knife holder G2, the outline (waste material outside the die cutting boundary) formed by die cutting of the soft silica gel film bonded on the double-sided adhesive tape 1 bypasses the guide roller and is led to the Q4 to be lifted away, in the lifting away process, the blue film 2 can be always bonded on the adhesive surface of the PET film with adhesive 4, and the double-sided adhesive tape 1 is also bonded on the blue film 2.
Referring to fig. 7, the masking paper 10 is wound on the Q16, the glue side of the masking paper 10 faces downward, the masking paper 10 and the first composite film with the cut outline are led to the third knife holder G3, and the glue side of the masking paper 10 is adhered to the soft silicone film 101 (the waste material remained inside the die-cutting boundary) on the first composite film; the third knife holder G3 is provided with a second knife, the knife edge of the second knife is a circle of convex blocks 9 protruding out of the surface of the rotating roller, when the blue film 2 is rolled by the convex blocks 9, the convex blocks can align with the soft silica gel film 101 on the inner side of the die cutting boundary and extrude the soft silica gel film 101, the bonding strength between the soft silica gel film 101 and the beautiful line paper 10 and the bonding strength between the soft silica gel film 101 and the double-sided adhesive 1 are increased, a gap is formed between the beautiful line paper 10 on the outer side of the die cutting boundary and the double-sided adhesive 1 on the outer side of the die cutting boundary, the two double-sided adhesive 1 cannot be bonded with each other, after the first composite film passes through the third knife holder, the beautiful line paper 10 is led to the Q6 and lifted away, and meanwhile, the soft silica.
Referring to fig. 4, the whole-face beautiful pattern paper 10 is wound on the Q17, the composite film and the whole-face beautiful pattern paper 10 are led to the fourth cutter holder G4, no cutter is mounted on the fourth cutter holder G4, the whole-face beautiful pattern paper 10 is adhered to the double-sided adhesive tape 1 on the upper surface of the blue film 2, and a gap is formed between the whole-face beautiful pattern paper 10 and the blue film 2 on the inner side of the die-cutting boundary and cannot be adhered to the blue film 2 on the inner side of the die-cutting boundary. The bonding strength between the whole-face figure paper 10 and the double-faced adhesive tape 1 is greater than that between the double-faced adhesive tape 1 and the blue film 2, after the composite film penetrates out of the fourth cutter holder G4, the whole-face figure paper 10 leads to the Q7 to lift the double-faced adhesive tape 1 and the blue film 2 outside the die-cutting boundary away, and a second composite film is formed, and the structure of the second composite film is as shown in figure 4, and the blue film 2, the glue 3 on the glue face of the PET film with the glue and the PET film 4 are sequentially arranged from top to bottom.
Referring to fig. 5, the base paper 5 is wound on the Q9, the adhesive surface of the base paper 5 faces downward, after the base paper 5 passes around the guide roller, the adhesive surface is adhered to the upper surface of the blue film 2 penetrating out of the fourth cutter holder G4, so as to form a third composite film, the structure of the third composite film is shown in fig. 5, and the base paper 5, the layer of adhesive 6 compounded on the base paper, the blue film 2, the adhesive 3 on the adhesive surface of the PET film with the adhesive, and the PET film 4 are sequentially arranged from top to bottom.
Referring to fig. 6, the third composite film is led to the sixth knife holder G6, and after the fourth composite film is led out of the sixth knife holder G6, the PET film 4 with glue adhered to the blue film 2 is led to the Q11 and lifted away. And finally, forming a finished product, and leading the finished product to Q10 for rolling to finish the processing technology, wherein the finished product has a structure shown in figure 6, and sequentially comprises a base paper 5, a layer of glue 6 compounded on the base paper and a blue film 2 from top to bottom.
In the process of lifting the waste material (the blue film 2 outside the die-cutting boundary) of the blue film 2, firstly, a layer of soft silicone film 101 is stuck on the double-sided adhesive tape 1, after the outline of the soft silicone film 101 is lifted by Q4, a layer of soft silicone film 101 is remained on the formed blue film 2, and the soft silicone film 101 is not arranged outside the die cutting boundary, under the adhesion of the first masking paper 10, the soft silica gel film 101 on the inner side of the die-cutting boundary and the double-sided adhesive tape 1 on the inner side of the die-cutting boundary can be lifted away firstly, so that only the formed blue film 2, the double-sided adhesive tape 1 remained on the outer side of the die-cutting boundary and the blue film 2 waste remained on the outer side of the die-cutting boundary are remained on the PET film 4 with adhesive, the second masking paper 10 can lift away the double-sided adhesive tape 1 and the blue film 2 waste remained on the outer side of the die-cutting boundary, because a gap is formed between the masking paper 10 and the blue film 2 on the inner side of the die-cutting boundary, the formed blue film 2 cannot be lifted away together in the process of lifting away the waste material of the blue film 2.
In each step of the process, the pasting or rolling of the film and the like are manually wound on the corresponding rotating roller at the beginning, and then the rotating roller is started to paste or roll.
A press roller of a round-to-round die cutting machine is positioned at a knife holder G2 (shown in figure 2) and used for rolling a first composite film and extracting a soft silica gel film 101 and a double-sided adhesive tape; as shown in fig. 7, the first composite film and the soft silicone film 101 include an upper pressure roller 7 and a lower pressure roller 8, with reference to fig. 8 and 9, the distance between the outer cylindrical surface of the upper pressure roller 7 and the surface of the lower pressure roller 8, which are close to each other, is s, the total thickness of the first composite film and the soft silicone film 101 is b, and the distance between the outer cylindrical surface of the bump 9 and the surface of the lower pressure roller 8, which are close to each other, is d, where d < b < s; during operation, a layer of soft silicone membrane 101 is firstly adhered to the first composite membrane, then the first composite membrane and the soft silicone membrane are introduced between the upper pressing roller 7 and the lower pressing roller 8 together, the rotating directions of the upper pressing roller 7 and the lower pressing roller 8 are opposite, the rotating directions of the upper pressing roller 7 and the lower pressing roller 8 are the directions indicated by the arc-shaped arrows in fig. 7, and the moving direction of the first composite membrane is the direction indicated by the straight-line arrows (arrows marked with v letters) in fig. 7.
As shown in fig. 7 and 8, at least two bumps 9 are fixedly connected to the outer cylindrical surface of the upper pressing roller 7, the number of the bumps 9 is preferably more than ten, one surface of the bump 9 away from the upper pressing roller 7 is a cylindrical surface, the axis of the cylindrical surface of the bump 9 coincides with the axis of the cylindrical surface of the upper pressing roller 7, the bumps 9 are uniformly distributed around the axis of the upper pressing roller 7, and when the upper pressing roller 7 rotates, the bumps 9 can be squeezed on the soft silicone film 101 on the inner side of the die-cutting boundary; the arc length between the adjacent bumps 9 is equal to the distance between the soft silica gel films 101 on the inner sides of the adjacent die-cutting boundaries, the radius of the cylindrical surface of each bump 9 is 0.05-0.1 mm larger than that of the cylindrical surface of the upper pressing roller 7, the beautiful line paper 10 is clamped between each bump 9 and the soft silica gel films 101 during working, the extrusion effect of the bumps 9 can increase the bonding strength between the beautiful line paper 10 and the soft silica gel films 101 and between the soft silica gel films 101 and the double-sided adhesive, when the beautiful line paper 10 is torn off, the soft silica gel films 101 and the double-sided adhesive on the inner sides of the die-cutting boundaries can be exposed, and the blue films 2 on the inner sides of the die-cutting boundaries are reserved, and the double-sided adhesive.
As shown in fig. 7, the edge of the cylindrical surface of the bump 9 is provided with a fillet 91, when the bump 9 extrudes the soft silicone film 101, the textured paper 10 is sandwiched between the bump 9 and the soft silicone film 101, the textured paper 10 at the edge of the bump 9 contacts with and extrudes with the surface of the soft silicone film 101, the fillet 91 surface can slide relative to the surface of the textured paper 10, so as to reduce the friction between the edge of the bump 9 and the textured paper 10, and avoid that the bump 9 scrapes the textured paper 10 to cause the textured paper 10 to drive the side surface of the soft silicone film 101 at the inner side of the die-cutting boundary to extrude the soft silicone film 101 at the outer side of the die-cutting boundary, and the soft silicone film 101 at the outer side of the die-cutting boundary may drive the soft silicone film 101 at the outer side of the die-cutting boundary to separate from the PET.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (4)
1. A knife extraction process for producing a protective film is characterized by comprising the following steps:
step 1: compounding the blue film (2), the PET film (4) with the adhesive and the double-sided adhesive (1) to form a first composite film;
step 2: sticking a layer of soft silica gel film (101) on the double-sided adhesive tape (1), and then carrying out outline die cutting;
and step 3: lifting profile waste: the outline formed after the die cutting of the soft silica gel film (101) adhered to the double-sided adhesive tape (1) is lifted away, in the lifting away process, the blue film (2) can be always adhered to the adhesive surface of the PET film (4) with the adhesive, and the double-sided adhesive tape (1) is also adhered to the blue film (2);
and 4, step 4: lifting away the soft silicone film (101) and the double-sided adhesive tape (1) on the inner side of the die-cutting boundary: the glue surface of the figure paper (10) is bonded with the soft silica gel film (101) on the first composite film; when the blue film (2) is rolled by the bump (9) on the press roller, the blue film is aligned with the soft silicone film (101) on the inner side of the die-cutting boundary and the soft silicone film (101) is extruded, the bonding strength between the soft silicone film (101) and the masking paper (10) and the bonding strength between the soft silicone film (101) and the double-sided adhesive tape (1) are increased, a gap is formed between the masking paper (10) on the outer side of the die-cutting boundary and the double-sided adhesive tape (1) on the outer side of the die-cutting boundary, the masking paper (10) cannot be bonded with each other, and the soft silicone film (101) and the double-sided adhesive tape (1) on the inner side of the die-cutting boundary are lifted away while the masking paper;
and 5: lifting the waste materials of the double-sided adhesive tape (1) and the blue film (2) outside the die-cutting boundary: bonding the whole-face pattern beautifying paper (10) with the double-sided adhesive tape (1) on the upper surface of the blue film (2), wherein a gap is formed between the whole-face pattern beautifying paper (10) and the blue film (2) on the inner side of the die-cutting boundary and cannot be bonded with the blue film (2) on the inner side of the die-cutting boundary; the bonding strength between the whole-face beautiful pattern paper (10) and the double-sided adhesive tape (1) is greater than that between the double-sided adhesive tape (1) and the blue film (2), and the whole-face beautiful pattern paper (10) lifts away the double-sided adhesive tape (1) and the blue film (2) outside the die-cutting boundary;
step 6: compounding and sticking the base paper (5) on the blue film (2);
and 7: and lifting the PET film (4) with the adhesive to form a finished product.
2. The extraction knife process for the production of protective films according to claim 1, characterized in that: before the profile waste is lifted away, the profile waste is wound on a material collecting roller.
3. The extraction knife process for the production of protective films according to claim 1, characterized in that: before the double-sided adhesive tape (1) on the outer side of the die-cutting boundary and the soft silicone film (101) on the inner side of the die-cutting boundary are lifted away, the beautiful pattern paper (10) is wound on a material collecting roller.
4. The extraction knife process for the production of protective films according to claim 1, characterized in that: after the finished product is formed, the finished product is wound on a receiving roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711412060.4A CN107962855B (en) | 2017-12-23 | 2017-12-23 | A draw sword technology for protection film production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711412060.4A CN107962855B (en) | 2017-12-23 | 2017-12-23 | A draw sword technology for protection film production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107962855A CN107962855A (en) | 2018-04-27 |
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| CN116554799A (en) * | 2023-05-22 | 2023-08-08 | 东莞市日盛绝缘制品有限公司 | Processing technology of teflon adhesive tape |
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| CN101898434B (en) * | 2009-05-27 | 2013-01-02 | 比亚迪股份有限公司 | Preparation method of die-cutting product |
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