Method for recycling of glasine paper release layer in rfid tag production

Abstract

This invention relates to a method for recycling the glassine paper release layer in RFID tag production. The RFID tag is formed by laminating a three-layer structure—face paper, inlay layer, and backing paper—on a tag laminating machine. The recycling method includes the following steps: A. Confirming the selection of self-adhesive coated paper and glassine paper release layer materials in the face paper through measurement; B. Selecting a suitable hot melt adhesive material; C. Adjusting the lamination process parameters and hot melt adhesive parameters of the tag laminating machine according to the selected glassine paper release layer and hot melt adhesive materials; D. Installing the face paper and inlay layer on the tag laminating machine to begin mass production. The glassine paper release layer in the face paper is first coated with hot melt adhesive on the tag laminating machine and then used as the backing paper of the RFID tag, directly participating in the lamination process, and then sequentially laminating with the inlay layer and face paper; E. Verifying the various parameters of the finished product.

Description

Technical Field

[0001] This invention relates to a manufacturing process for RFID tags in the field of information technology, and in particular discloses a method for recycling the glassine paper peeling layer in RFID tag production. Background Technology

[0002] Currently, the industry commonly uses a composite process to produce RFID tags, employing a three-layer structure: a face paper, an inlay layer, and a double-sided adhesive backing paper. The face paper is a composite layer of self-adhesive coated paper and a glassine paper release layer. The double-sided adhesive backing paper is composed of a release layer, an adhesive layer, and a carrier layer, both of which are made of glassine paper. The inlay layer is a pre-laminated product consisting of multiple layers of sheets with chips and antennas. In actual tag production, the glassine paper release layer of the face paper and the release layer of the double-sided adhesive backing paper are treated as waste after being peeled and wound up on the tag laminating machine. Manufacturers cannot directly reuse them, and even if they were treated as recyclable waste, they would still have to bear some waste disposal costs, resulting in waste for manufacturers and increasing production costs.

[0003] Therefore, how to improve the quality of RFID tags while effectively reducing production costs and increasing corporate profits is a topic that manufacturing companies have been researching. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art by designing a method for recycling the glassine paper peeling layer in RFID tag production, thereby improving the existing RFID tag composite process and achieving the effects of reducing tag production costs and increasing production efficiency.

[0005] This invention is implemented as follows: a method for recycling the glassine paper release layer in RFID tag production, characterized in that: the RFID tag is formed by laminating a three-layer main structure—face paper, inlay layer, and backing paper—on a tag laminating machine; the face paper comprises a composite layer of self-adhesive coated paper and a glassine paper release layer; the inlay layer is a pre-laminated product consisting of multiple layers of sheets with chips and antennas; and the backing paper is obtained by coating the glassine paper release layer of the face paper with hot melt adhesive on a tag laminating machine. The recycling method includes the following steps: A. Selection of glassine release layer material in the face paper: Measurements confirmed that the material and basis weight of the self-adhesive coated paper in the selected face paper met the label requirements. Measurements also confirmed that the thickness of the glassine release layer and the basis weight of the silicone oil in the selected face paper met the label requirements. B. Hot melt adhesive material selection: The hot melt adhesive must have a peel force greater than or equal to 15N in an operating environment ranging from -20℃ to +80℃. Initial tack and holding power must be tested using instruments. Initial tack must be able to adhere to a No. 20 test steel ball on an adhesive tape initial tack tester. Holding power must be greater than or equal to 48 hours. The method for confirming the adhesive's tack is as follows: First, prepare a sample label. Paste the prepared label onto a corrugated cardboard box, manually press it flat, and then peel the label off. If the hot melt adhesive causes damage to the surface of the corrugated cardboard box at this point, it meets the adhesive requirements for the hot melt adhesive. C. Based on the selected glassine paper release layer and hot melt adhesive material, adjust the lamination process parameters and hot melt adhesive parameters of the label laminating machine accordingly. D. Install the face paper and inlay layer on the label laminating machine to begin mass production. The glassine paper release layer in the face paper is first coated with hot melt adhesive on the label laminating machine and then used as the base paper for the RFID tag. It is then laminated sequentially with the inlay layer and the face paper. E. Verify all parameters of the finished product.

[0006] The recycling method employs a label laminating machine, which is controlled by a PLC control system. The machine includes a face paper mounting roller, an inlay layer mounting roller, a finished product winding roller, and corresponding mechanisms for the lamination process: a first traction mechanism for pulling the face paper, a second traction mechanism for pulling and laminating the face paper, inlay layer, and backing paper to form a composite layer, a third traction mechanism for pulling the glassine paper peeling layer in the face paper, an adhesive coating mechanism for applying hot melt adhesive to the glassine paper peeling layer to form the backing paper, a lamination mechanism for laminating the inlay layer and the backing paper, a die-cutting mechanism and a slitting mechanism for die-cutting the composite layer, and a fourth traction mechanism for pulling the composite layer.

[0007] The specific steps of the recycling method are as follows: A face paper is installed on a face paper mounting roller, and an Inlay layer is installed on an Inlay layer mounting roller. After passing through a face paper correction mechanism, the self-adhesive coated paper and glassine paper release layer in the face paper are separated at a first traction mechanism. The self-adhesive coated paper is fed into a second traction mechanism, while the glassine paper release layer serves as the label's base paper. It is then fed into an adhesive coating mechanism via a third traction mechanism for hot melt adhesive coating. The glassine paper release layer coated with hot melt adhesive forms the base paper and is sent to a laminating mechanism. Simultaneously, the Inlay layer is also sent to the laminating mechanism via its corresponding Inlay layer correction mechanism. At the laminating mechanism, the Inlay layer and the base paper are laminated. After lamination, the Inlay layer is then sent to the second traction mechanism, where the three-layer lamination of the face paper, Inlay layer, and base paper is completed to obtain a composite layer. This composite layer is then driven by a fourth traction mechanism to sequentially pass through a die-cutting mechanism and a slitting mechanism to form the finished product. The finished product is then wound up on a finished product winding roller.

[0008] The beneficial effects of this invention are as follows: This invention recycles and reuses the glassine paper release layer from the face paper in the existing RFID tag lamination process, and simultaneously uses it directly as the base paper of the RFID tag. This eliminates the release layer in the original RFID tag base paper, effectively reducing tag production costs, simplifying the RFID tag material handling process, improving production efficiency, and enabling RFID tags to obtain more considerable profits, which is conducive to mass production. At the same time, there is no longer any waste release layer material in RFID tag production, which is more environmentally friendly. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the production process of producing RFID tags on a tag laminating machine in Embodiment 1 of the present invention.

[0010] In the diagram: 1. Face paper mounting roller; 2. Inlay layer mounting roller; 3. Finished product take-up roller; 4. First traction mechanism; 5. Second traction mechanism; 6. Third traction mechanism; 7. Glue application mechanism; 8. Laminating mechanism; 9. Die-cutting mechanism; 10. Slitting mechanism; 11. Fourth traction mechanism. Detailed Implementation

[0011] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0012] According to the appendix Figure 1 This invention relates to a method for recycling the glassine paper release layer in RFID tag production. The RFID tag is formed by laminating a three-layer main structure—face paper, inlay layer, and backing paper—on a tag laminating machine. The face paper comprises a composite layer of self-adhesive coated paper and a glassine paper release layer. The inlay layer is a pre-laminated product consisting of multiple layers of sheet material with chips and antennas. The backing paper is obtained by coating the glassine paper release layer in the face paper with hot melt adhesive on a tag laminating machine.

[0013] The recycling method includes the following steps: 1. Selection of glassine paper release layer material in face paper: The glassine paper release layer in the face paper is coated with adhesive during the lamination process, replacing the double-sided adhesive backing paper in the existing technology. Therefore, as the backing paper for RFID tags, it is necessary to select appropriate materials according to the requirements of RFID tag backing paper.

[0014] 2. Hot melt adhesive material selection: Since the glassine paper release layer in the face paper has no adhesive layer after being peeled off, it cannot directly participate in the subsequent lamination process. If a double-sided adhesive layer is used for secondary lamination, a new double-sided adhesive release layer will inevitably be generated. Therefore, the method of coating the glassine paper release layer with a suitable hot melt adhesive to replace the original double-sided adhesive is chosen.

[0015] 3. Adjust the lamination process parameters and hot melt adhesive parameters of the label laminating machine according to the selected glassine paper release layer and hot melt adhesive material.

[0016] 4. Install the face paper and inlay layer on the label laminating machine to begin mass production.

[0017] 5. Verify all parameters of the finished product to see if they meet the requirements.

[0018] The method of this invention reduces raw material costs, downtime, and operator workload, while also reducing the output of waste materials.

[0019] Example:

[0020] In this embodiment, a label laminating machine is used. The label laminating machine is controlled by a PLC control system and is equipped with the following according to the laminating process: face paper mounting roller 1, inlay layer mounting roller 2, finished product winding roller 3, and a first traction mechanism 4, a second traction mechanism 5, a third traction mechanism 6, an adhesive coating mechanism 7, a laminating mechanism 8, a die-cutting mechanism 9, a slitting mechanism 10, and a fourth traction mechanism 11 corresponding to the laminating process route.

[0021] 1. Selection of glassine paper release layer material in face paper: The glassine paper release layer in the face paper is used as the release layer for the backing paper in the lamination process, so it is necessary to select appropriate materials according to the requirements of the RFID tag backing paper. Measurements confirmed that the material and basis weight of the self-adhesive coated paper in the selected face paper are consistent with the original label requirements. Measurements also confirmed that the thickness and basis weight of the glassine paper release layer in the selected face paper are consistent with the thickness and basis weight of the carrier layer of the original label's double-sided adhesive backing paper.

[0022] 2. Hot melt adhesive material selection: This invention replaces the original double-sided tape by coating the glassine paper release layer with a suitable hot melt adhesive. The hot melt adhesive must have a peel force greater than or equal to 15N in an operating environment ranging from -20℃ to +80℃. Simultaneously, initial tack and holding power are tested using instruments. Initial tack must be able to adhere to a No. 20 test steel ball on an adhesive tape initial tack tester, and holding power must be greater than or equal to 48 hours. The adhesiveness of the hot melt adhesive is confirmed as follows: a trial label is first made, then pasted onto a corrugated cardboard box, manually pressed flat, and then the label is peeled off. If the hot melt adhesive can tear through the surface of the corrugated cardboard box at this point, it meets the adhesion requirements.

[0023] 3. Adjust the lamination process parameters and hot melt adhesive parameters of the label laminating machine accordingly based on the selected glassine paper release layer and hot melt adhesive material.

[0024] 4. Install the face paper and inlay layer on the label laminating machine to begin mass production.

[0025] The face paper is installed on the face paper mounting roller 1, and the inlay layer is installed on the inlay layer mounting roller 2. After passing through the face paper correction mechanism, the self-adhesive coated paper and glassine paper release layer in the face paper are separated at the first traction mechanism 4. The self-adhesive coated paper is then fed into the second traction mechanism 5. The glassine paper release layer serves as the label's base paper and is fed through the third traction mechanism 6 into the gluing mechanism 7 for hot melt adhesive coating to obtain the base paper. The base paper continues to be fed into the laminating mechanism 8. Simultaneously, the inlay layer is also fed into the laminating mechanism 8 through its corresponding inlay layer correction mechanism, where the inlay layer and the base paper are laminated. After lamination, it is then fed into the second traction mechanism 5, where the face paper, inlay layer, and base paper are laminated to obtain the composite layer. This composite layer is then driven by the fourth traction mechanism 11 to pass sequentially through the die-cutting mechanism 9 and the slitting mechanism 10 to form the finished product. The finished product is then wound up on the finished product winding roller 3.

[0026] 5. Verify all parameters of the finished product to see if they meet the requirements.

[0027] Comparison of the method of this invention with existing methods for producing RFID tags: Using existing technology, 50*50 book labels are produced with a label spacing of 55.88mm and a material width of 60mm. Based on current raw material procurement and production methods, approximately 297 labels can be produced per square meter. The raw material costs are: face paper 2.1 yuan / ㎡, double-sided adhesive 12 yuan / ㎡. Excluding the cost of the inlay layer, the cost per label is 0.047 yuan.

[0028] The material cost required for production using the method of this invention is: face paper 3.0 yuan / ㎡, hot melt adhesive 1.6 yuan / ㎡. Excluding the cost of the inlay layer, the cost of a single label is 0.0155 yuan.

[0029] The above calculation shows that the cost saving per label is 0.0315 yuan. Based on 1 million labels per order, the cost saving is 31,500 yuan.

[0030] Meanwhile, from a practical production perspective, the method of this invention is a continuous lamination process, which reduces the need for changing and monitoring the backing paper, thus reducing the number and duration of downtime caused by backing paper changes. This indirectly increases equipment capacity and reduces the workload of operators. Furthermore, compared to existing production processes, the method of this invention also reduces the waste of two peeling layers, effectively reducing the generation of waste.

Claims

1. A method for recycling the glassine paper peeling layer in RFID tag production, characterized in that: The RFID tag is formed by laminating a three-layer structure—face paper, inlay layer, and backing paper—on a tag laminating machine. The face paper comprises a composite layer of self-adhesive coated paper and a glassine paper release layer. The inlay layer is a pre-laminated product consisting of multiple layers of sheet material with a chip and antenna. The backing paper is obtained by coating the glassine paper release layer of the face paper with hot melt adhesive on the tag laminating machine. The recycling method includes the following steps: A. Selection of glassine release layer material in the face paper: Measurements confirmed that the material and basis weight of the self-adhesive coated paper in the selected face paper met the label requirements. Measurements also confirmed that the thickness of the glassine release layer and the basis weight of the silicone oil in the selected face paper met the label requirements. B. Hot melt adhesive material selection: The hot melt adhesive must have a peel strength greater than or equal to 15N in an operating environment ranging from -20℃ to +80℃. Simultaneously, initial tack and holding power must be tested using instruments. Initial tack must be able to adhere to a No. 20 test steel ball on an adhesive tape initial tack testing machine, and holding power must be greater than or equal to 48 hours. C. Based on the selected glassine paper release layer and hot melt adhesive material, adjust the lamination process parameters and hot melt adhesive parameters of the label laminating machine accordingly. D. Install the face paper and inlay layer on the label laminating machine to begin mass production. The glassine paper release layer in the face paper is first coated with hot melt adhesive on the label laminating machine and then used as the base paper for the RFID tag. It is then laminated sequentially with the inlay layer and the face paper. E. Verify all parameters of the finished product.

2. The method for recycling the glassine paper peeling layer in RFID tag production according to claim 1, characterized in that: The recycling method employs a label laminating machine, which is controlled by a PLC control system. The machine includes a face paper mounting roller, an inlay layer mounting roller, a finished product winding roller, and corresponding mechanisms for the laminating process: a first traction mechanism for pulling the face paper, a second traction mechanism for pulling and laminating the face paper, inlay layer, and backing paper to form a composite layer, a third traction mechanism for pulling the glassine paper peeling layer in the face paper, a coating mechanism for applying hot melt adhesive to the glassine paper peeling layer to form the backing paper, a laminating mechanism for laminating the inlay layer and the backing paper, a die-cutting mechanism and a slitting mechanism for die-cutting the composite layer, and a fourth traction mechanism for pulling the composite layer.

3. A method for recycling the glassine paper peeling layer in RFID tag production according to claim 2, characterized in that... The specific steps of the recycling method are as follows: A face paper is installed on a face paper mounting roller, and an Inlay layer is installed on an Inlay layer mounting roller. After passing through a face paper correction mechanism, the self-adhesive coated paper and glassine paper release layer in the face paper are separated at a first traction mechanism. The self-adhesive coated paper is fed into a second traction mechanism, while the glassine paper release layer serves as the label's base paper. It is then fed into an adhesive coating mechanism via a third traction mechanism for hot melt adhesive coating. The glassine paper release layer coated with hot melt adhesive forms the base paper and is sent to a laminating mechanism. Simultaneously, the Inlay layer is also sent to the laminating mechanism via its corresponding Inlay layer correction mechanism. At the laminating mechanism, the Inlay layer and the base paper are laminated. After lamination, the Inlay layer is then sent to the second traction mechanism, where the three-layer lamination of the face paper, Inlay layer, and base paper is completed to obtain a composite layer. This composite layer is then driven by a fourth traction mechanism to sequentially pass through a die-cutting mechanism and a slitting mechanism to form the finished product. The finished product is then wound up on a finished product winding roller.

4. A method for recycling the glassine paper peeling layer in RFID tag production according to claim 1, characterized in that... The method for confirming the adhesiveness of the hot melt adhesive in step B is as follows: first, make a trial label, paste the prepared label on the corrugated cardboard box, press it flat manually, and then tear off the label. At this time, the hot melt adhesive will damage the surface of the corrugated cardboard box.

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