A manufacturing process for non-woven bags with built-in handles

Abstract

This invention relates to the field of packaging bag forming technology, and in particular to a manufacturing process for a non-woven bag with an integrated handle. The invention is characterized by using a hot-pressing device on a non-woven bag making machine to heat-press the handle onto the non-woven fabric after edge binding, cutting, and rotation. The non-woven fabric enters the hot-pressing device via an unwinding device. After hot pressing, the non-woven fabric enters the forming mechanism, where the handle is folded inwards. It then enters an edge-sealing device to seal and insert the edges of the non-woven fabric. Finally, it passes through a slitting mechanism to seal the bottom and cut, forming a non-woven bag with an integrated handle. The advantages of this invention are: the bag strip is integrated, eliminating the need for additional bag strip preparation, improving production efficiency, and reducing production costs.

Description

Technical Field

[0001] This invention relates to the field of packaging bag forming technology, specifically to a manufacturing process for a non-woven bag with a built-in handle. Background Technology

[0002] Non-woven bags, as an environmentally friendly type of bag, are widely used in daily life. To make them portable, handles are often installed at the opening for easy carrying. The two most common methods for installing handles are: 1. After the non-woven bag is processed, using an ironing machine to attach the handle; 2. Incorporating an ironing device into the non-woven bag making machine. Both methods result in handles located on the outside of the bag. External handles are scattered, difficult to secure, and inconvenient for packaging, requiring additional manual labor to organize the handles, increasing production costs and reducing efficiency. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a manufacturing process for a non-woven bag with a built-in handle, which addresses the shortcomings of the prior art and improves production efficiency while reducing production costs.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a manufacturing process for a non-woven bag with a built-in handle, characterized by comprising the following steps:

[0005] 1) The unwinding device conveys the nonwoven fabric to the ironing device;

[0006] 2) The handle unwinding mechanism located in the ironing device feeds the handle material to the edge binding mechanism, and the handle material is shaped by the edge binding mechanism to form a narrow strip of handle material;

[0007] 3) The material pulling mechanism located in the hot handle device pulls the narrow strip of handle material to the cutting mechanism, and the cutting mechanism cuts the narrow strip of handle material into handles of a specific length;

[0008] 4) The rotating mechanism located inside the ironing device rotates both ends of the handle by 90 degrees to obtain a U-shaped handle;

[0009] 5) The ironing mechanism located inside the ironing device fixes the U-shaped handle to the non-woven fabric;

[0010] 6) The non-woven fabric enters the forming device along the conveying direction. While being folded in half by the triangular hopper, the horizontal plate set at the opening of the triangular hopper folds the U-shaped handle inward, so that the U-shaped handle is located on the inside of the non-woven fabric.

[0011] 7) The non-woven fabric enters the edge-insertion device along the conveying direction. The heat-sealing mechanism inside the edge-insertion device heat-seals and fixes the two sides of the non-woven fabric to form a ring-shaped non-woven fabric.

[0012] 8) The inserting mechanism inside the inserting device inserts both sides of the ring-shaped nonwoven fabric inward to form creases;

[0013] 9) The non-woven fabric enters the slitting device along the conveying direction. The bottom sealing mechanism inside the slitting device heat-seals the bottom of the non-woven fabric and then cuts it into individual non-woven bags.

[0014] The present invention, which has the above-mentioned features, fixes the handle to the inside of the non-woven bag through this process, eliminating the bag sorting step, effectively improving production efficiency, saving packing space, reducing transportation costs, and realizing the ironing process of the handle while making the bag, simplifying the process steps and improving production efficiency.

[0015] A further feature of the present invention is that the ironing device includes a first ironing device and a second ironing device arranged along the nonwoven fabric conveying direction. After the nonwoven fabric enters the first ironing device and the second ironing device in sequence, two handles installed side by side are fixed on the nonwoven fabric.

[0016] The present invention, which has the above-mentioned features, completes the heat-pressing process of two handles on non-woven fabric by setting a first ironing device and a second ironing device. The two handles are fixed by two ironing devices respectively, simplifying the structure of the ironing device.

[0017] A further feature of this invention is that the ironing device is horizontally equipped with an input guide roller, a first output guide roller, and a second output guide roller. The ironing mechanism includes a heat-sealing mold assembly and two sets of ultrasonic welding heads. The input guide roller is positioned between the heat-sealing mold assembly and the ultrasonic welding heads. The first and second output guide rollers are positioned between the cutting mechanism and the edge-binding mechanism, and are located on the same horizontal plane. The non-woven fabric enters the ironing device from the input guide roller and leaves the ironing device after ironing, passing through the first and second output guide rollers.

[0018] The present invention with the above features: the non-woven fabric is fed out from the unwinding device and enters the ironing device as a whole along the conveying direction via the input guide roller. After the ironing is completed, the non-woven fabric leaves the ironing device along the first output guide roller and the second output guide roller. The non-woven fabric can pass through the ironing device as a whole. That is, the ironing device is set in the conveying direction of the non-woven fabric, which is different from the traditional ironing device position arrangement and reduces the installation space of the non-woven bag making machine.

[0019] A further feature of this invention is that the unwinding device, the ironing device, the forming device, and the slitting device are all arranged on the same longitudinal axis.

[0020] The present invention, which has the above-mentioned features, has four devices arranged on the same longitudinal axis, all along the nonwoven fabric conveying direction, which facilitates the nonwoven fabric to enter different devices for processing in sequence, reduces the space occupied by the whole machine, and simplifies the nonwoven fabric winding path.

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0022] Figure 1 This is a first process diagram of handle forming according to an embodiment of the present invention;

[0023] Figure 2 This is a diagram illustrating the second process of handle forming according to an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the ironing process according to an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the nonwoven bag formed according to the present invention;

[0026] Figure 5 This is a schematic diagram of the overall structure of the equipment required for implementing the molding process of this invention;

[0027] Figure 6 This is a schematic diagram of the heating device in this invention.

[0028] Figure 7 This is a schematic diagram of the insertion device in this invention.

[0029] Figure 8 This is a rear view of the heating device in this invention. Detailed Implementation

[0030] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0031] like Figure 1-8 The manufacturing process of the non-woven bag with the handle built-in is shown in the diagram. First, the non-woven fabric is fed to the following location via an unwinding device:

[0032] 1) Unwinding device a conveys nonwoven fabric 1 to ironing device b;

[0033] 2) The handle unwinding mechanism b1 located in the ironing device b sends the handle material 2 to the edge binding mechanism b2. The handle material 2 is formed by the edge binding mechanism b2 to form a narrow strip handle material 3.

[0034] 3) The material pulling mechanism b3 located in the hot handle device b pulls the narrow strip handle material 3 to the cutting mechanism b4, and the cutting mechanism cuts the narrow strip handle material 3 into handles 4 of a specific length.

[0035] 4) The rotating mechanism b5 located in the ironing device b rotates both ends of the handle 4 by 90 degrees to obtain a U-shaped handle 5;

[0036] 5) The ironing mechanism b6 located in the ironing device b fixes the U-shaped handle 4 onto the non-woven fabric 1;

[0037] 6) The non-woven fabric enters the forming device c along the conveying direction. While being folded in half by the triangular bucket c1, the horizontal plate c3 set at the opening c2 of the triangular bucket folds the U-shaped handle inward, so that the U-shaped handle is located on the inside of the non-woven fabric.

[0038] 7) The non-woven fabric enters the edge-insertion device d along the conveying direction. The heat-sealing mechanism d1 set in the edge-insertion device d heat-seales and fixes the two sides of the non-woven fabric to form a ring-shaped non-woven fabric.

[0039] 8) The inserting mechanism d2 inside the inserting device d inserts the two sides of the ring-shaped non-woven fabric inward to form creases;

[0040] 9) The non-woven fabric enters the slitting device e along the conveying direction. The bottom sealing mechanism e1 set in the slitting device e heat seals the bottom of the non-woven fabric and then cuts it into individual non-woven bags 6.

[0041] The ironing device b includes a first ironing device b' and a second ironing device b' arranged along the nonwoven fabric conveying direction. After the nonwoven fabric enters the first ironing device and the second ironing device in sequence, two handles are fixed on the nonwoven fabric and installed side by side.

[0042] The ironing device b is horizontally equipped with an input guide roller b7, a first output guide roller b8, and a second output guide roller b9. The ironing mechanism includes a heat-sealing mold assembly b61 and two sets of ultrasonic welding heads b62. The input guide roller b7 is located between the heat-sealing mold assembly b61 and the ultrasonic welding heads b62. The first output guide roller b8 and the second output guide roller b9 are located between the cutting mechanism b4 and the edge-binding mechanism b2, and the two are located on the same horizontal plane. The non-woven fabric 1 enters the ironing device b from the input guide roller b7, and after ironing, it leaves the ironing device through the first output guide roller b8 and the second output guide roller b9.

[0043] The unwinding device a, the ironing device b, the forming device c, and the slitting device d are all located on the same longitudinal axis.

Claims

1. A manufacturing process for a nonwoven bag with a built-in handle, characterized in that... Includes the following steps: The ironing device includes a first ironing device and a second ironing device arranged along the nonwoven fabric conveying direction, and an unwinding device conveys the nonwoven fabric to the first ironing device and the second ironing device. The handle unwinding mechanism located inside the hot handle device feeds the handle material to the edge binding mechanism, and the handle material is shaped by the edge binding mechanism to form a narrow strip of handle material; The material pulling mechanism located inside the hot handle device pulls the narrow strip of handle material to the cutting mechanism, and the cutting mechanism cuts the narrow strip of handle material into handles of a specific length. The rotating mechanism located inside the ironing device rotates both ends of the handle by 90 degrees to obtain a U-shaped handle; The ironing mechanism located inside the ironing device fixes the U-shaped handle to the non-woven fabric, on which two handles are fixed side by side. The non-woven fabric enters the forming device along the conveying direction. As it is folded in half by the triangular hopper, the horizontal plate set at the opening of the triangular hopper folds the U-shaped handle inward, so that the U-shaped handle is located on the inside of the non-woven fabric. The non-woven fabric enters the edge-insertion device along the conveying direction. The heat-sealing mechanism inside the edge-insertion device heat-seals and fixes the two sides of the non-woven fabric to form a ring-shaped non-woven fabric. The inserting mechanism inside the inserting device inserts the two sides of the ring-shaped non-woven fabric inward to form creases; The non-woven fabric enters the slitting device along the conveying direction. The bottom sealing mechanism inside the slitting device heat-seals the bottom of the non-woven fabric and then cuts it into individual non-woven bags.

2. The manufacturing process of a non-woven bag with a built-in handle according to claim 1, characterized in that: The ironing device is horizontally equipped with an input guide roller, a first output guide roller, and a second output guide roller. The ironing mechanism includes a heat-sealing mold assembly and two sets of ultrasonic welding heads. The input guide roller is located between the heat-sealing mold assembly and the ultrasonic welding heads. The first and second output guide rollers are located between the cutting mechanism and the edge-binding mechanism, and the two are located on the same horizontal plane. The non-woven fabric enters the ironing device from the input guide roller, and after ironing, it leaves the ironing device through the first and second output guide rollers.

3. The manufacturing process of a non-woven bag with a built-in handle according to claim 1, characterized in that: The unwinding device, the ironing device, the forming device, and the slitting device are all located on the same longitudinal axis.

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