CN101987521A - Thin paper winding gluing mechanism and gluing method with slotting scraper - Google Patents
Thin paper winding gluing mechanism and gluing method with slotting scraper Download PDFInfo
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Abstract
Description
技术领域technical field
本发明涉及薄纸卷绕上胶机构的设计,特别是关于一种具有切槽刮刀的薄纸卷绕上胶机构及上胶方法。The invention relates to the design of a thin paper winding gluing mechanism, in particular to a thin paper winding gluing mechanism with a slotting scraper and a gluing method.
背景技术Background technique
现有的薄纸卷绕机构的纸管,是靠输送机传递至一上卷轮旁,再由一推杆推入一弧型导板通道,到达一卷绕区。纸管于卷绕区中卷绕薄纸成为一纸卷筒,如同卷筒卫生纸一般。在卷绕的过程中,有使用转印方式涂上一头胶或一尾胶于薄纸上,亦有使用旋转杆件沾胶,再将旋转杆件所沾附的胶传递至薄纸上。The paper tube of the existing thin paper winding mechanism is delivered to the side of an upper winding wheel by a conveyor, and then pushed into an arc-shaped guide plate channel by a push rod to reach a winding area. The paper tube winds the thin paper in the winding area to form a paper roll, just like a roll of toilet paper. During the winding process, some use the transfer printing method to apply one end or one end of glue on the thin paper, and some use the rotating rod to apply glue, and then transfer the glue attached to the rotating rod to the thin paper.
本发明所欲解决的技术问题Technical problem to be solved by the present invention
然而,使用转印方式普遍会有沾胶量不足、沾胶不均匀的现象。而使用旋转杆沾胶易因高速旋转产生离心力而将胶甩出,此甩出的胶水难以有效的回收再利用。However, when using the transfer printing method, the amount of glue applied is generally insufficient and the glue is unevenly applied. However, using a rotating rod to dip glue is easy to throw out the glue due to the centrifugal force generated by high-speed rotation, and the glue thrown out is difficult to effectively recycle and reuse.
发明内容Contents of the invention
缘此,本发明的一目的是提供一种薄纸卷绕装置的上胶机构及上胶方法,可控制沾胶时的胶水量及胶水被覆的位置,以使薄纸的沾胶量充足且均匀。Therefore, an object of the present invention is to provide a gluing mechanism and a gluing method of a tissue winding device, which can control the amount of glue and the position of the glue coating during gluing, so that the amount of gluing on the tissue is sufficient and uniform.
本发明的另一目的是提供一种薄纸卷绕装置的上胶机构,使在沾胶后所用的多余胶水实时回收再利用。Another object of the present invention is to provide a gluing mechanism of a thin paper winding device, so that the excess glue used after gluing can be recovered and reused in real time.
本发明解决问题的技术手段Technical means for solving problems of the present invention
一种具有切槽刮刀的薄纸卷绕上胶机构,包括有一布胶轮,配置在一薄纸通过路径邻近位置处,且面对于薄纸的上胶面,以一预定旋转方向旋转,布胶轮具有一胶水附着轮面;一胶槽,设置于布胶轮的一侧,胶槽中容置有胶水;一切槽刮刀,以一平行于布胶轮的轴向方向的方向延伸,并对应于布胶轮的胶水附着轮面,切槽刮刀具有一紧邻轻触于布胶轮的胶水附着轮面的刮除端,且在切槽刮刀的刮除端设有至少一缺口凹槽;一胶水回收槽,设置于布胶轮下方一预定距离处。此外,胶槽亦可改为设置于布胶轮的下方,且不设置胶水回收槽,以胶槽兼任胶水回收槽的作用。A thin paper winding gluing mechanism with a slotting scraper, comprising a cloth rubber wheel, arranged at a position adjacent to a thin paper passing path, and facing the gluing surface of the thin paper, rotating in a predetermined direction of rotation, the cloth rubber wheel The rubber wheel has a glue attached to the wheel surface; a glue groove is arranged on one side of the cloth rubber wheel, and glue is accommodated in the glue groove; the groove cutting scraper extends in a direction parallel to the axial direction of the cloth rubber wheel, and Corresponding to the glue attachment wheel surface of the cloth rubber wheel, the grooving scraper has a scraping end close to the glue attachment wheel surface lightly touching the cloth rubber wheel, and at least one notch groove is provided at the scraping end of the grooving scraper; A glue recovery tank is arranged at a predetermined distance below the cloth rubber wheel. In addition, the glue tank can also be set under the cloth rubber wheel instead, and the glue recovery tank is not provided, and the glue tank doubles as the glue recovery tank.
当布胶轮旋转时,布胶轮的胶水附着轮面由胶槽中沾附胶水,此沾附胶水在通过切槽刮刀的刮除端时,受到切槽刮刀的刮除端予以刮除非位于缺口凹槽的胶水,但对应于切槽刮刀的缺口凹槽的沾附胶水,则在通过切槽刮刀的缺口凹槽时,形成一被覆胶层于布胶轮的胶水附着轮面,以供沾附至薄纸的上胶面。When the cloth rubber wheel rotates, the glue attached wheel surface of the cloth rubber wheel is attached with glue from the glue groove. When the attached glue passes through the scraping end of the grooving scraper, it is scraped by the scraping end of the grooving scraper unless it is located The glue of the notch groove, but the adhesive glue corresponding to the notch groove of the grooving scraper, when passing through the notch groove of the grooving scraper, forms a coated glue layer on the glue attachment wheel surface of the cloth rubber wheel, for Adheres to the glued side of tissue paper.
于本发明的实施例中,还包括有一上胶拨杆,配置在相反于薄纸的上胶面的受推面,上胶拨杆受一驱动机构驱动旋转,用以使薄纸受上胶拨杆推压与布胶轮的胶水附着轮面的被覆胶层接触而沾附胶水。In the embodiment of the present invention, it also includes a gluing lever, which is arranged on the pushed surface opposite to the gluing surface of the thin paper. The gluing lever is driven to rotate by a driving mechanism to make the thin paper be glued. The driving lever pushes and contacts with the coated glue layer of the glue attached wheel surface of the cloth rubber wheel to adhere to the glue.
本发明对照现有技术的功效The present invention contrasts the effect of prior art
经由本发明所采用的技术手段,使胶水在沾附到薄纸前,切槽刮刀的刮除端会先刮除形成在布胶轮的胶水附着轮面上的被覆胶层非位于胶水通过区段的胶水,只有位于胶水通过区段的被覆胶层才得以通过,使沾胶的位置会依照胶水通过区段的设计而均匀分布在所需的位置。胶水通过区段的大小、形状决定了被覆胶层能通过的量以及通过后的厚度分布,使得沾胶量受到调节。利用胶水通过区段的大小、形状的设计时除了能使沾胶量充足且均匀外,更可以对应各种薄纸沾胶的需求,加强或改变特定位置的粘着强度。Through the technical means adopted in the present invention, before the glue adheres to the thin paper, the scraping end of the grooving scraper will first scrape off the coated glue layer formed on the glue attachment wheel surface of the cloth rubber wheel, which is not located in the glue passing area. The glue in the section can only pass through the coating glue layer located in the section where the glue passes through, so that the position of the glue will be evenly distributed in the desired position according to the design of the section where the glue passes through. The size and shape of the section where the glue passes determines the amount of the covered glue layer that can pass through and the thickness distribution after passing through, so that the amount of glue can be adjusted. The size and shape of the glue passing section can not only make the amount of glue applied evenly, but also meet the needs of various thin paper glue, and strengthen or change the adhesive strength of specific positions.
于本发明的第二实施例中,切槽刮刀除了用来控制被覆胶层的分布位置的外,一方面亦用以刮除布胶轮的胶水附着轮面上多余的胶水。另外,由于胶槽的位置改为设置在布胶轮的下方,使多余的胶水会直接流回至胶槽中,取代了胶水回收槽的功用。如此一来,不仅仅使整体结构因为减少了胶水回收槽而更加精简,更省下从胶水回收槽将回收的胶水输入至胶槽所需花费的时间与人力。进一步而言,胶槽中的胶水因为能不断地回收补充而不易匮乏,可节省成本。In the second embodiment of the present invention, the grooving scraper is not only used to control the distribution position of the coated glue layer, but also used to scrape off excess glue on the glue attachment wheel surface of the cloth rubber wheel. In addition, since the position of the glue tank is changed to be set under the cloth rubber wheel, the excess glue will flow back directly into the glue tank, replacing the function of the glue recovery tank. In this way, not only the overall structure is more streamlined due to the reduction of the glue recovery tank, but also the time and manpower required to input the recycled glue from the glue recovery tank to the glue tank are saved. Furthermore, because the glue in the glue tank can be continuously recycled and supplemented, it is not easy to be scarce, which can save costs.
本发明所采用的具体实施例,将通过以下的实施例及附呈图式作进一步的说明。The specific embodiments adopted by the present invention will be further described through the following embodiments and attached drawings.
附图说明Description of drawings
图1显示本发明第一实施例的侧视示意图;Fig. 1 shows the schematic side view of the first embodiment of the present invention;
图2显示本发明第一实施例的步骤流程图;Fig. 2 shows the flow chart of steps of the first embodiment of the present invention;
图3至图6显示各种切槽刮刀的刮除端形状的侧视图;Figures 3 to 6 show side views of the shapes of the scraping ends of various grooving blades;
图7至图10显示各种切槽刮刀的胶水通过区段形状的上视示意图;其中图7亦显示切槽刮刀及布胶轮的局部组立的上视示意图;Figure 7 to Figure 10 show the top schematic diagrams of the shape of the glue passage section of various grooving scrapers; wherein Figure 7 also shows the top schematic diagrams of the partial assembly of the grooving scraper and the cloth rubber wheel;
图11显示布胶轮布胶后的上视图;Figure 11 shows the top view of the cloth rubber wheel after the cloth is glued;
图12显示上胶拨杆的上视图;Figure 12 shows the top view of the gluing lever;
图13显示上胶拨杆位在推压位置的侧视示意图;Figure 13 shows a schematic side view of the gluing lever at the pushing position;
图14显示上胶拨杆点胶完成后的侧视示意图;Figure 14 shows a schematic side view of the gluing lever after dispensing is completed;
图15显示平刮刀及布胶轮的局部组立的底视示意图;Figure 15 shows a schematic bottom view of a partial assembly of a flat scraper and a cloth rubber wheel;
图16显示纸管进入卷绕区中与薄纸卷绕的侧视示意图;Figure 16 shows a schematic side view of the paper tube entering the winding area and being wound with thin paper;
图17显示纸管与薄纸在卷绕区中持续卷绕形成纸卷筒及薄纸被拉断的侧视示意图;Figure 17 shows a schematic side view of the paper tube and the thin paper being continuously wound in the winding area to form a paper roll and the thin paper being pulled off;
图18显示卷绕完成的纸卷筒的立体图;Figure 18 shows a perspective view of the finished paper roll;
图19显示裁切后的纸卷筒的立体图;Figure 19 shows a perspective view of the cut paper roll;
图20显示裁切后的纸卷筒的侧视图;Figure 20 shows a side view of the cut paper roll;
图21显示本发明第二实施例的侧视示意图;Figure 21 shows a schematic side view of the second embodiment of the present invention;
图22显示本发明第二实施例的步骤流程图。Fig. 22 shows a flowchart of the steps of the second embodiment of the present invention.
【主要元件符号说明】[Description of main component symbols]
100、100’ 薄纸卷绕装置100, 100’ Tissue paper winding device
1 夹送轮1 pinch wheel
2 打孔装置2 Punching device
3、3’ 上胶机构3. 3' Gluing Mechanism
31 布胶轮31 Cloth rubber wheel
311 胶水附着轮面311 Glue attached to the wheel surface
32、32’ 胶槽32, 32' glue tank
33、33a、33b、33c、33d、33e、切槽刮刀33, 33a, 33b, 33c, 33d, 33e, grooving scraper
33f33f
331、331a、331b、331c、331d、刮除端331, 331a, 331b, 331c, 331d, scraper end
331e、331f331e, 331f
332、332a、332b、332c 缺口凹槽332, 332a, 332b, 332c Notched Groove
34 上胶拨杆34 Gluing lever
341 上胶拨杆轴心341 Axis of glued lever
342 驱动机构342 Driving mechanism
35 平刮刀35 Flat scraper
351 刮胶端351 Squeegee end
36 胶水回收槽36 Glue recycling tank
37 檔板37 Baffle
41 输送带承板41 Conveyor belt carrier
42 推杆42 Putter
43 纸管输送通道43 Paper tube conveying channel
44 弧形导板44 Curved guide plate
45 延伸臂45 Extension arm
451 凸出部451 Protrusions
46 压送轮46 Press wheel
5 卷绕区5 winding area
51 上卷轮51 winding wheel
52 下卷轮52 Down Roller
53 骑轮53 riding a wheel
61 压紧输送带61 Compressing the conveyor belt
62 倾斜通道62 Inclined channel
A 推压位置A Push position
g1 胶水g1 glue
g2 被覆胶层g2 Coating adhesive layer
g21、g21’ 尾胶g21, g21’ tail glue
g22 头胶g22 head glue
g3 多余的胶水g3 Excess Glue
I 旋转方向I Direction of rotation
P1 薄纸P1 Thin paper
P11 上胶面P11 glued surface
P12 受推面P12 Pushed side
P2 纸管P2 paper tube
P2’ 已粘附薄纸的纸管P2’ paper tube with tissue paper attached
P3 纸卷筒P3 paper roll
P4 短支纸卷筒P4 Short paper roll
R 输送方向R Conveying direction
R1 薄纸通过路径R1 Thin paper passing path
W 宽度W Width
具体实施方式Detailed ways
参阅图1及图2所示,其显示本发明第一实施例的侧视示意图及步骤流程图。图1中所示即为薄纸卷绕装置100,一薄纸P1先由一对夹送轮1以一输送方向R输送进入薄纸卷绕装置100中,再经一打孔装置2在薄纸P1上每隔一预定距离打上一列如虚线般的切割线,之后经过一薄纸通过路径R1(步骤101),在上胶机构3中进行区域上胶的动作。Referring to FIG. 1 and FIG. 2 , it shows a schematic side view and a flow chart of the steps of the first embodiment of the present invention. Shown in Fig. 1 is the thin
上胶机构3用以将薄纸P1经过薄纸通过路径R1时,在薄纸P1的上胶面P11沾附胶水。上胶机构3包括有一布胶轮31、一胶槽32、一切槽刮刀33、至少一上胶拨杆34、一平刮刀35、一胶水回收槽36及一檔板37。The gluing mechanism 3 is used to attach glue to the gluing surface P11 of the thin paper P1 when passing the thin paper P1 through the thin paper passing path R1 . The gluing mechanism 3 includes a
布胶轮31配置在薄纸通过路径R1邻近位置处,且面对于薄纸P1的上胶面P11,以一预定旋转方向I旋转,布胶轮31具有一胶水附着轮面311;胶槽32设置于布胶轮31的侧边,胶槽32中容置有胶水g1。The
切槽刮刀33以一平行于布胶轮31的轴向方向的方向延伸(同时参阅图7),并对应于布胶轮31的胶水附着轮面311。切槽刮刀33具有一紧邻轻触于布胶轮31的胶水附着轮面311的刮除端331。另外参阅图3至图6所示,其显示各种切槽刮刀的刮除端形状的侧视图。如图所示,虽然于本发明的第一实施例中,切槽刮刀33的刮除端331为单锥形,但也可以是其它形状。像是如切槽刮刀33a的刮除端331a为锥形;切槽刮刀33b的刮除端331b为平直形;切槽刮刀33c的刮除端331c为弧形,刮除端331亦可为其它适当的形状,以因应各种需求。The grooving
另外参阅图7至图10所示,其显示各种切槽刮刀的缺口凹槽形状的上视示意图,其中图7亦显示切槽刮刀及布胶轮的局部组立的上视示意图。切槽刮刀33的刮除端331对应于薄纸P1欲沾附胶水g1的选定区域的位置处,设有至少一缺口凹槽332。于本发明的第一实施例中,缺口凹槽332的形状为弧形。但也可以设计成如切槽刮刀33d的刮除端331d的缺口凹槽332a的锥形、如切槽刮刀33e的刮除端331e的缺口凹槽332b的梯形、或是如切槽刮刀33f的刮除端331f的缺口凹槽332c的矩形,缺口凹槽332亦可为其它适当的形状,要使用何种大小、形状,端看不同沾胶量的需求而定。Also refer to FIG. 7 to FIG. 10 , which show schematic top views of the shapes of notches and grooves of various grooving scrapers, and FIG. 7 also shows a schematic top view of a partial assembly of the grooving scraper and the cloth rubber wheel. The scraping
另外参阅图11所示,其显示布胶轮布胶后的上视图。当布胶轮31旋转时,布胶轮31的胶水附着轮面311会由胶槽32(同时参阅图13)中沾附胶水g1(步骤102),该沾附的胶水g1在通过切槽刮刀33的刮除端331时,受到切槽刮刀33的刮除端331予以刮除非位于缺口凹槽332(同时参阅图7)的胶水g1。但对应于切槽刮刀33的缺口凹槽332上的胶水g1不会被刮除,于通过切槽刮刀33的缺口凹槽332时,在布胶轮31的胶水附着轮面311上形成一被覆胶层g2(步骤103)。Also refer to shown in Figure 11, which shows the top view of the cloth rubber wheel after the cloth is glued. When the
另外参阅图12、图13及图14所示,其显示上胶拨杆的上视图、上胶拨杆位在推压位置的侧视示意图及上胶拨杆点胶完成的侧视示意图。上胶拨杆34配置在薄纸通过路径R1邻近位置处,且面对于相反于薄纸P1的上胶面P11的受推面P12。上胶拨杆34连接在一上胶拨杆轴心341上,受一驱动机构342驱动而以上胶拨杆轴心341为轴心旋转。当上胶拨杆34旋转至推压位置A(如图13所示)时,薄纸P1被上胶拨杆34推压与布胶轮31的胶水附着轮面311的被覆胶层g2接触,使薄纸P1的上胶面P11沾附一尾胶g21(步骤104,同时参阅图14)。Also refer to Fig. 12, Fig. 13 and Fig. 14, which show the top view of the gluing lever, the side view of the gluing lever in the pushing position, and the side view of the gluing lever after dispensing. The
薄纸P1沾胶后继续移送,必要时上胶拨杆34可再旋转第二圈,使得薄纸P1的上胶面P11在间隔沾附尾胶g21的位置一段距离处再沾附一头胶g22,而这段距离可通过控制上胶拨杆34的转速来调整。虽然在本发明的第一实施例中,薄纸P1沾附有尾胶g21及头胶g22,但亦可以只沾附尾胶g21或是只沾附头胶g22端,看实际的需求。在实际应用上,纸管P2亦可在输送带承板41输送过程中,于一预定位置在纸管P2上先沾附一头胶。After the thin paper P1 is glued, it continues to be transported. If necessary, the gluing
另外参阅图15所示,其显示平刮刀及布胶轮的局部组立的底视示意图。平刮刀35以一平行于布胶轮31的轴向方向的方向延伸对应于布胶轮31的胶水附着轮面311。平刮刀35具有一紧邻接触于布胶轮31的胶水附着轮面311的刮胶端351,平刮刀35的刮胶端351并无任何缺口凹槽,用以刮除薄纸P1沾胶过后,胶水附着轮面311上的多余的胶水g3(参阅图1)。多余的胶水g3被刮除后会流至设置于布胶轮31下方一预定距离处的胶水回收槽36中,回收再利用(步骤105)。Also refer to FIG. 15 , which shows a schematic bottom view of a partial assembly of a flat scraper and a cloth rubber wheel. The
檔板37设置在布胶轮31上方邻近位置,且轻触于薄纸P1的上胶面P11,使薄纸P1与布胶轮31的胶水附着轮面311的被覆胶层g2保持一小间距,当薄纸P1受上胶拨杆34的推压点胶后,薄纸P1受檔板37的支撑会随即与布胶轮31的胶水附着轮面311的被覆胶层g2分离,保持一小间距。The
另一方面,纸管P2先由一输送带承板41承载输送,再由一推杆42将纸管P2推入一纸管输送通道43中。纸管输送通道43形成在一弧形导板44及一上卷轮51之间。当纸管P2进入纸管输送通道43并与薄纸P1卷绕后,会被传送至卷绕区5。On the other hand, the paper tube P2 is carried and transported by a conveyor
另外参阅图16所示,其显示纸管进入卷绕区中与薄纸卷绕的侧视示意图。卷绕区5位于一上卷轮51、一下卷轮52及一骑轮53之间,在卷绕区5中,已粘附薄纸的纸管P2’与薄纸P1持续卷绕而逐渐形成一纸卷筒P3(同时参阅图17)。Also refer to FIG. 16 , which shows a schematic side view of the paper tube entering the winding area and winding with the thin paper. The winding
当纸卷筒P3快要卷绕完成时,一新纸管P2被传送至纸管输送通道43的压送轮46处,薄纸P1被该纸管P2及延伸臂45的凸出部451夹制,而将薄纸P1拉断,顺利完成纸卷筒P3的卷绕,纸卷筒P3卷绕完成后,沿着倾斜通道62及压紧输送带61排出。When the paper roll P3 is about to finish winding, a new paper tube P2 is sent to the
参阅图18、图19及图20所示,其显示卷绕完成的纸卷筒的立体图、裁切后的纸卷筒的立体图及裁切后的纸卷筒的侧视图。如图所示,纸卷筒P3例如卷筒卫生纸、卷筒擦手纸、卷筒厨房纸巾。于上胶过程中所沾附的尾胶g21’使纸卷筒P3尾端封合。当纸卷筒P3要供应予消费者使用时,即会以一宽度W裁切加工而成一短支纸卷筒P4。Referring to FIG. 18 , FIG. 19 and FIG. 20 , they show the perspective view of the wound paper roll, the perspective view of the cut paper roll and the side view of the cut paper roll. As shown in the figure, the paper roll P3 is, for example, a roll of toilet paper, a roll of toilet paper, or a roll of kitchen towel. The attached tail glue g21' in the gluing process seals the tail end of the paper roll P3. When the paper roll P3 is to be supplied to consumers, it will be cut with a width W to form a short paper roll P4.
参阅图21及图22所示,其显示本发明第二实施例的侧视示意图及步骤流程图,此一实施例的薄纸卷绕装置100’的结构设计大致上与前述第一实施例相同,故相同的构件乃标示以相同的元件编号,以资对应。Referring to Fig. 21 and Fig. 22, which show a schematic side view and a flow chart of the steps of the second embodiment of the present invention, the structural design of the tissue winding device 100' of this embodiment is substantially the same as that of the aforementioned first embodiment , so the same component is marked with the same component number to match.
本发明第二实施例的上胶机构3’仅包括有一布胶轮31、一胶槽32’、一切槽刮刀33、至少一上胶拨杆34及一檔板37。胶槽32’改为设置于布胶轮31的下方一预定位置。切槽刮刀33位于布胶轮31的侧边位置,可以使用一般常见的方法将其固定,切槽刮刀33的刮除端331设有至少一缺口凹槽332(同时参阅图7)。与前述第一实施例相似地,薄纸P1沿着薄纸通过路径R1移送(步骤201),布胶轮31旋转使布胶轮31的胶水附着轮面311由胶槽32’中沾附胶水g1(步骤202),多余的胶水g3在通过切槽刮刀33的刮除端331时,受到切槽刮刀33的刮除端331予以刮除。但对应于切槽刮刀33的缺口凹槽332的胶水g1,则在通过切槽刮刀33的缺口凹槽332时,在布胶轮31的胶水附着轮面311上形成被覆胶层g2(步骤203)后,通过上胶拨杆34的推压,将胶水沾附至薄纸P1的上胶面P11(步骤204)。The gluing mechanism 3' of the second embodiment of the present invention only includes a
本发明的第二实施例相较于第一实施例的最大不同之处在于结构上省去第一实施例中所使用的胶水回收槽36。多余的胶水g3由切槽刮刀33的刮除端331刮除后,回流入设置于布胶轮31下方的胶槽32’中,而并非是第一实施例中的胶水回收槽36。如此一来,胶槽32’中的胶水g1能立即回收而循环再利用,不需再从胶水回收槽36来补充。The biggest difference between the second embodiment of the present invention and the first embodiment is that the
由以上的实施例可知,本发明所提供的具有切槽刮刀的薄纸卷绕上胶机构及上胶方法确具产业上的利用价值,故本发明业已符合于专利的要件。以上的叙述仅为本发明的实施例说明,凡精于此项技艺者当可依据上述的说明而作其它种种的改良,这些改变仍属于本发明的发明精神及以下所界定的专利范围中。From the above examples, it can be known that the thin paper winding gluing mechanism and gluing method provided by the present invention are indeed of industrial value, so the present invention already meets the requirements of the patent. The above description is only an illustration of the embodiment of the present invention, and those who are skilled in this art can make other various improvements according to the above description, and these changes still belong to the inventive spirit of the present invention and the patent scope defined below.
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CN102747653B (en) * | 2011-05-25 | 2015-05-20 | 金红叶纸业集团有限公司 | Household paper coating device and method |
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