CN107187691B - Manufacturing method of packaging sheet with bondable cover sheet structure and packaging box obtained by the method - Google Patents

Abstract

The invention provides a method for making a packaging sheet with a bondable cover sheet structure. The method is to firstly cut the base material into a packaging sheet that can be folded into a packaging box according to the design requirements of the packaging box, and then make the packaging sheet on the packaging sheet. The front side of the material forms a non-closed flap cutting line, the two ends of the sealing flap cutting line are located on the fold line between the upper end face sheet and the rear wall sheet or on the rear wall sheet close to the fold line, and the middle of the sealing flap cutting line The point is located on the front wall sheet, and finally on the back of the packaging sheet, a self-adhesive label is pasted on the area facing the sealing cover by means of positioning and labeling. The area of the self-adhesive label is larger than the area of the sealing cover and is pre-formed. There is a cutting line of the sealing sheet, the cutting line of the sealing sheet is located within the range of the cutting line of the sealing flap, and the two ends of the cutting line are on the same straight line as the two ends of the cutting line of the sealing flap. The production method of the invention has simple process, convenient cutting and high yield. The present invention also provides a packaging box obtained by the above manufacturing method.

Description

Manufacturing method of packaging sheet with bondable cover sheet structure and obtained by the method packing box

technical field

The present invention relates to a manufacturing method of a packaging material, in particular to a manufacturing method of a product packaging sheet that needs to be opened repeatedly but has the requirement of moisturizing and fragrance protection, and more particularly relates to a packaging sheet with a bondable cover sheet structure Production Method. The present invention also relates to a packaging box obtained by the above manufacturing method.

Background technique

Similar products that need to be opened repeatedly but have moisturizing and fragrance protection requirements are usually packaged in folded inner packaging, and the inner packaging is set in a hard box outer packaging box with a hinged lid. Inner packaging is usually constructed of folded composites, foils or other flexible sheets. When in use, after opening the outer packaging of the hard box, tear off the aluminum foil wrapping paper on the top side of the inner packaging. In order to simplify the operation for consumers to open the packaging box for the first time, and at the same time prevent the loss of water and aroma loss of such products in the opened packaging box, the applicant of the present invention has developed a combination sealing function of glue and suction. Packaging box, and applied for a utility model patent with the State Intellectual Property Office on September 22, 2016 and was authorized. The patent number is 201621072477.1. The packaging box is composed of a supporting frame and a wrapping sheet. There is a frame opening for taking out the packaged items in the supporting frame. The wrapping sheet is wrapped outside the supporting frame to form a packing box together with the supporting frame. The position of the sheet corresponds to the position of the extraction port, the size of the sealing sheet is the same as that of the extraction port, the sealing sheet is covered with a sticky cover sheet, the cover sheet is provided with an activation label, and the activation label is provided with an adsorption material. The packaging box developed by the applicant, on the one hand, can repeatedly seal the packaged items in the supporting frame through the adhesive cover sheet, ensuring that the packaged items can be kept moist and reduce the loss of aroma for a period of time after the first opening; On the one hand, consumers can open the outer package and the inner package at the same time with only one action, which is very convenient to use. The wrapping sheet of the above-mentioned packaging box is composed of a bottom base material layer, an adhesive layer and a surface layer sequentially, and the sealing cover sheet is obtained by cutting the surface layer and the adhesive layer of the wrapping sheet, and by cutting the base of the wrapping sheet material layer to obtain the pick-up port; because the wrapping sheet uses three-layer composite material, the price is relatively high, and the applicant of the present invention found in the production process that the pick-up is formed by cutting different composite layers of the wrapping sheet For the opening and sealing cover, because the force of the cutting machine is difficult to control, the depth of the cutting line is often insufficient, and the separation between the layers cannot be separated, or the cutting line is too deep, and the layers that should not be separated are separated, which will cause The increase in waste products further increases production costs and affects the popularization and application of products.

Contents of the invention

In order to solve the above existing problems, the object of the present invention is to provide a method for making a packaging sheet with a bondable cover sheet structure.

Another object of the present invention is to provide a packaging box with a bondable cover sheet structure obtained by the above manufacturing method.

In order to achieve the above object, the manufacturing method of the packaging sheet with a bondable cover sheet structure of the present invention comprises the following steps:

(1) According to the design requirements of the packaging box, the base material is cut out into a packaging sheet that can be folded into a packaging box. The packaging sheet is sequentially provided with front and lower end panels, front wall panels, and upper end surfaces connected by fold lines along the length direction. sheet, rear wall sheet and rear lower end surface sheet, and the left and right wall sheets are connected by broken lines on both sides of the front wall sheet and the rear wall sheet;

(2) A non-closed flap cutting line that can cut off the packaging sheet is formed on the front of the packaging sheet, and the two ends of the sealing flap cutting line are located on or close to the fold line between the upper end panel and the rear wall sheet On the rear wall, the midpoint of the cutting line of the sealing flap is located on the front wall;

(3) On the back of the packaging sheet, use the method of positioning and labeling, and paste a self-adhesive label on the area facing the sealing cover. The area of the self-adhesive label is larger than that of the sealing cover and is pre-formed. The cutting line of the sealing sheet with the dry glue label and the same shape or similar shape to the cutting line of the sealing flap, the cutting line of the sealing sheet is located within the range of the cutting line of the sealing flap and the two ends are on the same line as the two ends of the cutting line of the sealing flap. The adhesive force between the adhesive label and the back of the packaging sheet is greater than the force required to break the weakening point of the cutting line when the sealing sheet is uncovered, thereby obtaining a packaging sheet with a bondable cover sheet structure.

In order to facilitate folding, a notch is cut at both ends of the above-mentioned front and lower surface, and the notch is cut to the fold line between the front wall and the left and right wall pieces; the middle ear is cut at both ends of the upper surface, and the middle ear is cut to the front and back The wall piece and the fold line of the left and right wall pieces; the top ear pieces are cut at both ends of the rear lower end surface piece, and the top ear piece is cut to the fold line of the rear lower end surface piece and the rear wall piece.

Both the above-mentioned cutting line of the sealing cover sheet and the cutting line of the sealing sheet are U-shaped.

In order to better ensure the adhesive force between the self-adhesive label and the packaging sheet, the distance between each side of the above-mentioned self-adhesive label and the corresponding side of the sealing cover is preferably 2-10mm.

In order to make the sealing flap have better adhesion in the process of repeated opening and pasting, the distance between the cutting line of the sealing flap and the cutting line of the sealing flap is 2-6mm.

In order to facilitate the lifting of the sealing flap, both sides of the U-shaped bottom of the above-mentioned sealing flap cutting line are inwardly recessed, so that the front end of the sealing flap forms a tongue.

The above-mentioned substrate is paper, cardboard or paper-plastic composite sheet.

The present invention also provides a packaging box with a bondable cover sheet structure obtained by the above-mentioned production method. The overlapping part is located on the lower end surface and the left and right side walls of the packaging box. The two ends of the cutting line of the sealing flap and the cutting line of the sealing sheet are located at the junction of the upper end surface of the box body and the rear side wall. The sealing flap The midpoint of the cutting line and the sealing sheet cutting line is located at the upper part of the front side wall of the box body, and the midpoint of the sealing sheet cutting line is higher than the midpoint of the sealing flap cutting line.

In order to strengthen the stiffness and compression resistance of the packaging box, the above-mentioned packaging box also includes a support frame, which has front and rear side walls, left and right side walls, and a lower end surface. The support frame is located in the box formed by the above-mentioned packaging sheet, and the support frame The front side wall is provided with a gap corresponding to the sealing piece.

In order to facilitate the opening of the sealing flap and at the same time make the sealing flap have a certain self-weight, the above-mentioned sealing flap is provided with an activation label.

The above-mentioned packaging box also includes an envelope, the envelope has front and rear side walls, left and right side walls and a lower end surface, the size and shape of the envelope match the box body formed by the above-mentioned packaging sheet, and the top of the side wall of the envelope is opened. , a notch with a similar shape, and the thickness of the side wall of the envelope is equal to the thickness of the activation label.

The manufacturing method of the packaging sheet with a bondable cover sheet structure of the present invention adopts a non-closed sealing cover sheet cutting line that can cut off the packaging sheet on the front of the packaging sheet, and then uses positioning stickers on the back of the packaging sheet In the way of labeling, a self-adhesive label is pasted on the area facing the sealing flap. The self-adhesive label is pre-formed with a non-closed sealing sheet cutting line that can cut off the self-adhesive label and is located within the cutting line range of the sealing flap. When the sealing flap is lifted from the midpoint of the cutting line of the sealing flap and pulled upwards and backwards, the sealing sheet is pulled up together with the sealing flap under the action of the adhesive force, and the cutting line of the sealing sheet breaks, forming an access port and sealing The area between the cutting line of the cover sheet and the cutting line of the sealing sheet is the adhesive layer of the self-adhesive label, which allows the sealing cover sheet to be opened and pasted repeatedly. The manufacturing method of the present invention has the advantages of simple process, convenient cutting and high yield, and single-layer paper or cardboard can be used as the packaging sheet, which greatly saves the manufacturing cost of the product. The packing box obtained by the manufacturing method of the present invention has a simple structure, and has a receptacle that can be opened and sealed repeatedly, which can ensure that the packaged object can be kept moist and reduce the loss of aroma within a certain period of time after being opened for the first time.

Description of drawings

Fig. 1 is a schematic structural view of the front surface of a packaging sheet with a bondable cover sheet structure according to the present invention.

Fig. 2 is a schematic diagram of the structure of the self-adhesive label.

Fig. 3 is a structural schematic view of the back side of the packaging sheet with a bondable cover sheet structure according to the present invention.

Fig. 4 is a schematic view of the structure of the packaging sheet of the present invention when the sealing flap is lifted.

Fig. 5 is a schematic structural view of a packaging box formed from the packaging sheet of the present invention.

Fig. 6 is a structural schematic diagram of the supporting frame of the packaging box of the present invention.

Fig. 7 is a schematic structural view of a packaging box formed by wrapping a supporting frame with a packaging sheet according to the present invention.

Fig. 8 is a structural schematic diagram of a packaging box with an envelope formed from the packaging sheet of the present invention.

Detailed ways

As shown in Figures 1, 2, and 3, the packaging sheet with a bondable cover sheet structure of the present invention, according to the design requirements of the packaging box, first cuts the paper or cardboard into a packaging sheet that can be folded into a cigarette box 1. The packaging sheet is connected with the front lower end surface 11, the front wall piece 12, the upper end surface 13, the rear wall piece 14, the rear lower end surface 15, the left wall piece 16 and the right wall piece 17, and the front lower end surface is connected by a folding line. Sheet, front wall sheet, upper end sheet, rear wall sheet and rear lower end sheet are arranged in sequence along the length direction of the paper or cardboard, and the left and right wall sheets are located on both sides of the front wall sheet and the rear wall sheet; the front and lower end sheets are cut at both ends Make a square notch 111, the square opening is cut to the crease line of the front wall and the left and right wall pieces; the two ends of the upper end face are cut out the middle ear piece 131, and the middle ear piece is cut to the crease line of the front and rear wall pieces and the left and right wall pieces Cut out the top lug 151 at both ends of the rear lower end face sheet, and the top ear is cut to the fold line between the rear lower end face sheet and the rear wall sheet; the front of the packaging sheet is formed by a laser cutting machine to cut off the large size of the packaging sheet U-shaped sealing flap cutting line 18, the two ends of the sealing flap cutting line are located on the fold line between the upper end surface and the rear wall, the midpoint of the sealing flap cutting line is located on the front wall, and the sealing flap is cut Both sides of the U-shaped bottom of the line are inwardly recessed, so that the front end of the sealing flap forms a tongue 181; on the back of the packaging sheet, a self-adhesive is pasted on the area facing the sealing flap by positioning and labeling Standard 2, the area of the self-adhesive label is larger than the area of the sealing cover, and a small U-shaped sealing film cutting line 21 that can cut off the self-adhesive label is pre-formed by a laser cutting machine. The sealing film cutting line is located at the sealing cover cutting line The distance between each side of the self-adhesive label and the corresponding side of the sealing cover is 2-10mm, and the distance between the cutting line of the sealing sheet and the cutting line of the sealing cover is 2-6mm, the adhesive force between the self-adhesive label and the back of the packaging sheet is greater than the force required to break the weakening point of the cutting line when the sealing sheet is uncovered, when the sealing flap is lifted from the tongue of the sealing flap cutting line and When pulling upwards and backwards, the sealing sheet is pulled up together with the sealing cover sheet under the action of the adhesive force, and the cutting line of the sealing sheet breaks to form an access port 19. The area between the sealing cover sheet cutting line and the sealing sheet cutting line is not The glue layer of the dry glue label, which allows the sealing cover to be opened and pasted repeatedly, as shown in Figure 4.

As shown in Figure 5, the above-mentioned packaging sheet is made of cardboard with a certain rigidity, and the cardboard is folded along the fold line to form a box body with front and rear side walls, left and right side walls, upper and lower end surfaces and overlapping parts, and the overlapping part is located on the lower end surface of the packaging box and the left and right side walls, the two ends of the sealing flap cutting line and the sealing sheet cutting line are located at the junction of the upper end surface of the box body and the rear side wall, and the bottoms of the sealing flap cutting line and the sealing sheet cutting line are located on the front side of the box body On the upper part of the wall, the bottom of the cutting line of the sealing sheet is higher than the bottom of the cutting line of the sealing flap, and the starting label 3 is pasted on the sealing flap. When using, pull the starting label upwards and backwards, and the weakening line of the sealing flap begins to break. The sealing cover is uncovered step by step. Since the self-adhesive label and the sealing cover are in a bonded state, and its bonding force is greater than the force required to break the weakening point of the cutting line when the sealing film is uncovered, the cutting line of the sealing film also begins to break , the sealing sheet is lifted together with the sealing cover sheet, and the access port is gradually opened.

As shown in Figures 6 and 7, the above-mentioned packaging sheet adopts single-layer paper. In order to strengthen the stiffness and compression resistance of the packaging box, the packaging box of the present invention also includes a supporting frame 4, which has front and rear side walls. , the left and right side walls and the lower end surface, the support frame is wrapped in the box body by the above-mentioned packaging sheet, and the front side wall of the support frame is provided with a gap 41 corresponding to the sealing sheet.

As shown in Figure 8, in order to ensure the smooth progress of the thermoplastic film packaging process and the compact and smooth appearance of the final product, it can also ensure the compact structure of the strip-shaped outer packaging used to pack a plurality of small boxes, the packaging of the present invention The box also includes an envelope 5, which also has front and rear side walls, left and right side walls, and a lower end surface. The size and shape of the envelope match the box body formed by the packaging sheet, and can form a socket relationship with the packaging box body. The top of the side wall is provided with a notch 51 having the same size and shape as the activation label, and the thickness of the side wall of the envelope is equal to the thickness of the activation label.

The above is only a detailed description of the manufacturing method of the packaging sheet with a bondable cover sheet structure and an embodiment of the packaging box obtained by the method of the present invention, but this embodiment is not intended to limit the scope of protection of the present invention. Equivalent implementation or modification of the invention, such as sticking a self-adhesive label on the predetermined area of the substrate and then cutting it, or changing the shape of the sealing cover, or changing the design of the access port and the cover on the side of the box body, All should be included in the scope of the present invention.

Claims (9)

1. A method for making a packaging sheet with a bondable cover sheet structure, comprising the steps of: (1) According to the design requirements of the packaging box, the base material is cut out into a packaging sheet that can be folded into a packaging box. The packaging sheet is sequentially provided with front and lower end panels, front wall panels, and upper end surfaces connected by fold lines along the length direction. sheet, rear wall sheet and rear lower end surface sheet, and the left and right wall sheets are connected by broken lines on both sides of the front wall sheet and the rear wall sheet; (2) A non-closed flap cutting line that can cut off the packaging sheet is formed on the front of the packaging sheet, and the two ends of the sealing flap cutting line are located on or close to the fold line between the upper end panel and the rear wall sheet On the rear wall, the midpoint of the cutting line of the sealing flap is located on the front wall; (3) On the back of the packaging sheet, use the method of positioning and labeling, and paste a self-adhesive label on the area facing the sealing cover. The area of the self-adhesive label is larger than that of the sealing cover and is pre-formed. The cutting line of the sealing sheet with the dry glue label and the same shape or similar shape to the cutting line of the sealing flap, the cutting line of the sealing sheet is located within the range of the cutting line of the sealing flap and the two ends are on the same line as the two ends of the cutting line of the sealing flap. The adhesive force between the adhesive label and the back of the packaging sheet is greater than the force required to break the weakened point of the cutting line when the sealing sheet is uncovered, thereby obtaining a packaging sheet with a bondable cover sheet structure; each side of the above self-adhesive label The distance between the edge and the corresponding side of the sealing flap is 2-10 mm, and the distance between the cutting line of the sealing sheet and the cutting line of the sealing flap is 2-6 mm. 2. The method for making a packaging sheet with a bondable cover sheet structure according to claim 1, wherein a notch is cut at both ends of the front lower end face sheet, and the notch is cut to the front wall and the left and right walls. cut out the middle ear piece at both ends of the upper end surface piece, and the middle ear piece is cut to the fold line of the front and rear wall pieces and the left and right wall pieces; Cut to the crease line between the back lower end piece and the back wall piece. 3. The method for making a packaging sheet with a bondable cover sheet structure according to claim 1 or 2, characterized in that: the cutting line of the sealing cover sheet and the cutting line of the sealing sheet are both U-shaped. 4. The method for making a packaging sheet with a bondable cover sheet structure according to claim 3, characterized in that: both sides of the U-shaped bottom of the sealing cover sheet cutting line are inwardly recessed, so that the sealing cover sheet The front end forms a tongue. 5 . The method for making a packaging sheet with a bondable cover sheet structure according to claim 1 , wherein the base material is single-layer paper, cardboard or paper-plastic composite sheet. 6. A packaging box with a bondable cover sheet structure, the packaging box is formed by folding the packaging sheet obtained by any of the manufacturing methods described in claims 1-5 along the folding line, and has front and rear side walls, left and right side walls , The box body of the upper and lower end faces and the overlapping part, the overlapping part is located at the lower end face and the left and right side walls of the packaging box, the two ends of the cutting line of the sealing cover sheet and the cutting line of the sealing sheet are located at the junction of the upper end face of the box body and the rear side wall, The midpoint of the sealing flap cutting line and the sealing flap cutting line is located at the upper part of the front side wall of the box body, and the midpoint of the sealing flap cutting line is higher than the midpoint of the sealing flap cutting line. 7. The packaging box with a bondable cover sheet structure according to claim 6, characterized in that: the packaging box also includes a support frame, the support frame has front and rear side walls, left and right side walls and a lower end surface, supporting The frame is located in the box body formed by the packaging sheet, and the front side wall of the support frame is provided with a gap corresponding to the sealing sheet. 8. The packaging box with a bondable cover sheet structure according to claim 6 or 7, characterized in that: the sealing cover sheet is provided with an activation label. 9. The packing box according to claim 8, characterized in that: the packing box also includes a cover, the cover has front and rear side walls, left and right side walls and a lower end surface, the size of the cover is , The shape matches the box body formed by the packaging sheet, and can form a socket relationship with the box body. The top of the side wall of the envelope is provided with a gap equivalent to the size and shape of the activation label, and the thickness of the side wall of the envelope is equal to the thickness of the activation label. .

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