A combination closure of a membrane-sealed bottle and a piercing cap, and its applications and methods of use

Abstract

The application provides a combination of a film-sealing bottle and a piercing cap, and an application and a use method thereof. The film-sealing bottle comprises a bottle body, a bottle mouth, a sealing film and a first connecting part. The piercing cap comprises a cap top wall, a cap side wall, a piercing needle, a liquid guiding through hole and a second connecting part. The contact angle of the sealing film satisfies (θ in -θ out )≥15°. The piercing needle is arranged on the cap top wall in the opening direction of the piercing cap. The liquid guiding through hole is arranged on the cap top wall and / or the piercing needle. The piercing cap and the film-sealing bottle can be relatively rotated and connected through the first connecting part and the second connecting part. Through the combination, the consumer can use the liquid such as essence on the beauty equipment more conveniently. The combination can achieve the effect that the liquid flows out smoothly and quickly for the sealing film with different piercing strengths and the liquid with different surface tensions. The piercing cap in the combination can be used independently and repeatedly.

Description

Technical Field

[0001] This application relates to the field of packaging technology, specifically to a combination of a sealing bottle and a puncture cap, its application, and its usage. Background Technology

[0002] Currently, many home beauty devices (such as spray-type beauty devices) widely use single-use bottles to dispense beauty ingredients. During use, consumers need to unscrew or peel off the seal of the single-use bottle to allow the serum to flow into the device's reservoir. This dispensing operation is relatively complicated, requiring both hands to open the bottle, and may also lead to leakage of liquid (such as serum) due to the inconvenience of opening the bottle. This does not meet the needs of consumers who often only need one hand or can perform simple operations while applying makeup.

[0003] To make it easier for consumers to use serums on beauty devices, the inventors of this application attempted to solve problems such as complicated operation and serum leakage by puncturing the sealing film of the single-use bottle with a piercing cap and allowing the serum in the single-use bottle to flow out through the hole on the piercing cap without removing the cap. However, such a method is feasible only if: (1) the sealing film has low puncture strength and is prone to tearing into a large opening when punctured; and (2) the liquid in the single-use bottle has low surface tension. However, sealing films with low puncture strength are very easy to break during transportation or storage, and liquids with low surface tension have limited their application scenarios due to their tendency to foam and damage the skin.

[0004] The technical problem to be solved by this invention is how to ensure the puncture strength of the sealing film (e.g., the puncture strength of the sealing film reaches 5 N / mm or more) and how to ensure that the liquid flows out smoothly and quickly when using liquids with high surface tension (e.g., the surface tension of the liquid is 40 mN / m or more). Summary of the Invention

[0005] After in-depth research, the inventors of this application discovered that the above technical problems can be solved by changing the structure of the piercing needle on the cap and the contact angle between the inner and outer surfaces of the sealing film and the liquid.

[0006] Specifically, this application provides a combination of a sealing bottle and a puncture cap, the application of this combination, and a method for using this combination. The technical solution of this application is as follows:

[0007] 1. A combination fitting for a sealed bottle and a piercing cap, wherein,

[0008] The sealed bottle includes: a bottle body, a bottle mouth, a sealing film disposed on the bottle mouth, and a first connecting part disposed on the outside of the bottle mouth;

[0009] The puncture cap includes: a top wall of the cap, a side wall of the cap, a puncture needle, a fluid guiding hole, and a second connecting part disposed on the inner side of the side wall of the cap;

[0010] The sealing film of the sealed bottle has a first contact angle θ on the surface facing the inside of the bottle. in The surface facing outwards from the bottle has a second contact angle θ. out , where (θ in -θ out ≥15°;

[0011] The piercing needle is positioned on the top wall of the cover, facing the opening of the cover;

[0012] The fluid guiding hole is formed on the top wall of the cap and / or the needle;

[0013] When the opening of the sealed bottle is located inside the cap of the piercing cap, the piercing cap and the sealed bottle can rotate relative to each other and be fixedly connected through the first connecting part and the second connecting part;

[0014] The hydraulic diameter of the maximum flow cross-section formed by the needle piercing the sealing film is ≥0.3mm.

[0015] 2. The assembly according to item 1, wherein 105°≤θ in ≤135°; preferably, 80°≤θ out ≤120°.

[0016] 3. The assembly according to item 1, wherein the needle has a polygon of the same shape in any cross-section perpendicular to its height direction, and the shape parameter P = N of the polygon. 2 / M, and 2≤P<3, where M represents the number of sides of the polygon and N represents the number of convex vertices of the polygon.

[0017] 4. The assembly according to item 3, wherein,

[0018] The interior angles corresponding to the concave vertices of the polygon are 210° to 330°; and / or,

[0019] The deviation of the side length of any side of the polygon from the average side length shall not exceed ±20%.

[0020] 5. The combination of components according to item 3, wherein 2 < N < 6.

[0021] 6. The combination fittings according to item 3, wherein 4 ≤ M ≤ 10.

[0022] 7. The assembly according to item 1, wherein one of the first connecting portion and the second connecting portion includes a rotating protrusion and the other includes a rotating groove.

[0023] 8. The assembly according to item 1, wherein the puncture strength of the sealing film is 5 N / mm or higher.

[0024] 9. The application of the combination fittings described in any one of items 1 to 8 in the receiving and discharging of liquids, wherein the surface tension of the liquid is less than or equal to 70 mN / m.

[0025] 10. A method of using the combination fitting according to any one of items 1 to 8, comprising:

[0026] Connect the opening of the sealing bottle in the assembly to the inside of the cap of the piercing cap;

[0027] The sealed bottle and the piercing cap are rotated relative to each other circumferentially along the bottle opening / the side wall of the piercing cap.

[0028] The combination of the sealing bottle and the piercing cap makes it easier for consumers to use liquids such as serums on beauty devices (e.g., one-handed operation, simple operation, and prevention of liquid leakage).

[0029] Furthermore, the combination of accessories provided in this application can effectively achieve smooth and rapid liquid outflow for sealing films with different puncture strengths and liquids with different surface tensions, thus broadening the application scenarios.

[0030] Furthermore, the puncture cap in the combination accessories provided in this application can be used independently and multiple times, saving packaging costs and being more environmentally friendly.

[0031] The above description is merely an overview of the technical solution of this application. In order to make the technical means of this application clearer and more understandable, so that those skilled in the art can implement it according to the contents of the specification, and in order to make the above and other objects, features and advantages of this application more obvious and understandable, the following is an example of a specific implementation of this application. Attached Figure Description

[0032] Figure 1a : A bottom view of the cap being pierced in one embodiment;

[0033] Figure 1b : A side view of the piercing cap in one embodiment;

[0034] Figure 2a : A bottom view of the piercing cap in another embodiment;

[0035] Figure 2b : A side view of the piercing cap in another embodiment;

[0036] Figure 3a: A bottom view of the piercing cap in the third embodiment;

[0037] Figure 3b : A side view of the pierced cap in the third embodiment;

[0038] Figure 4a : A bottom view of the pierced cap in the fourth embodiment;

[0039] Figure 4b : A side view of the pierced cap in the fourth embodiment;

[0040] Figure 5a : A bottom view of the piercing cap in a comparative embodiment;

[0041] Figure 5b : A side view of the pierced cap in a comparative embodiment;

[0042] Figure 6a : A bottom view of the piercing cap in another comparative embodiment;

[0043] Figure 6b : A side view of the pierced cap in another comparative embodiment;

[0044] Figure 7a : A bottom view of the pierced cap in the third comparative embodiment;

[0045] Figure 7b : A side view of the pierced cap in the third comparative embodiment;

[0046] Figure 8a : A bottom view of the pierced cap in the fourth comparative embodiment;

[0047] Figure 8b : A side view of the pierced cap in the fourth comparative embodiment;

[0048] Figure 9a : A bottom view of the pierced cap in the fifth comparative embodiment;

[0049] Figure 9b : A side view of the pierced cap in the fifth comparative embodiment;

[0050] Figure 10a : A bottom view of the pierced cap in the sixth comparative embodiment;

[0051] Figure 10b : A side view of the pierced cap in the sixth comparative embodiment;

[0052] Figure 11 : A side view of a sealed bottle in one embodiment.

[0053] Explanation of reference numerals in the attached figures:

[0054] 010. Needle; 020. Fluid guiding hole; 030. Rotating protrusion; 040. Top wall of the cap; 050. Side wall of the cap;

[0055] 110. Bottle mouth; 120. Rotating groove; 130. Bottle body; 140. Sealing film; 150. Connecting groove. Detailed Implementation

[0056] The following embodiments of this application are only used to illustrate specific implementation methods of this application, and these embodiments should not be construed as limitations on this application. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of this application shall be considered equivalent substitutions and fall within the protection scope of this application.

[0057] Those skilled in the art should understand that, in the disclosure of this application, the terms "first," "second," "third," "fourth," "fifth," etc., are only used to distinguish different structures and do not limit the number of specific structures, connection relationships, etc.; in addition, the orientation or positional relationship indicated by "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc., is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this application.

[0058] In this application, "contact angle" (first contact angle θ) in Second contact angle θ out The contact angle (COP) refers to the contact angle of a surface relative to water. In this application, the specific measurement method involves fixing the sample horizontally on the microscope stage and rotating the microscope lens 90 degrees (from a vertical angle to a horizontal angle) to observe and photograph the side cross-section of the sample. 0.2 ml of purified water is slowly placed on the sample surface using a gas chromatograph syringe. The microscope focus is adjusted, and the state of the droplet after it reaches equilibrium on the sample is photographed. Contact angle analysis software automatically generates the tangent at the contact point between the droplet and the sample, thus obtaining the contact angle value.

[0059] In this application, "convex vertex" refers to a vertex in a polygon whose interior angle is less than 180°; correspondingly, "concave vertex" refers to a vertex in a polygon whose interior angle is greater than 180°.

[0060] In this application, the “puncture strength” of the sealing film refers to the puncture strength tested according to the ASTM D5748 method.

[0061] In this application, the "section" of the needle refers to the section perpendicular to its height direction.

[0062] In this application, the distance between the two points with the largest spacing on the edge of each cross-section perpendicular to its height direction is the width of that cross-section. In this application, the "maximum width" of the needle refers to the maximum value among the widths of all cross-sections.

[0063] In this application, unless otherwise explicitly stated, "diameter" refers to the diameter of a circle with an area equivalent to that of a circle with the same area.

[0064] In this application, the deviation between the side length of any side of the polygon and the average side length refers to the percentage of the difference between the side length of any side of the polygon and the average side length to the average side length, i.e., deviation = (difference between the side length of any side of the polygon and the average side length) / average side length * 100%.

[0065] In this application, "hydraulic diameter" refers to four times the ratio of the area to the perimeter of the flow cross-section, wherein "flow cross-section" refers to the cross-section formed between the inner contour of the sealing film rupture and the outer contour of the needle.

[0066] This embodiment provides a combination of a sealed bottle and a piercing cap, such as... Figures 1a to 4b , Figure 11 As shown,

[0067] The sealed bottle includes: a bottle body 130, a bottle mouth 110, a sealing film 140 disposed on the bottle mouth 110, and a first connecting part disposed on the outside of the bottle mouth 110;

[0068] The puncture cap includes: a top wall 040, a side wall 050, a needle 010, a fluid guiding hole 020, and a second connecting part disposed on the inner side of the side wall 050.

[0069] The sealing film of the sealed bottle has a first contact angle θ on the surface facing the inside of the bottle. in The surface facing outwards from the bottle has a second contact angle θ. out , where (θ in -θ out ≥15°;

[0070] The piercing needle 010 is positioned on the top wall 040 of the cover in the direction of the opening of the cover;

[0071] The liquid guiding hole 020 is formed on the top wall 040 of the cap and / or the puncture needle 010 so that the liquid in the sealed bottle can be discharged from the liquid guiding hole that punctures the cap.

[0072] When the bottle opening 110 of the sealed bottle is located inside the cap of the piercing cap, the piercing cap and the sealed bottle can rotate relative to each other and be fixedly connected through the first connecting part and the second connecting part;

[0073] The hydraulic diameter of the maximum flow cross-section formed by the piercing needle 010 piercing the sealing film 140 is...

[0074] ≥0.3mm.

[0075] In this application, "maximum flow cross-section" refers to the flow cross-section with the largest area when multiple flow cross-sections are formed between the inner contour of the sealing film rupture and the outer contour of the needle. Specifically, if using... Figures 1a-1b , Figures 2a-2b When considering different solutions, multiple flow cross-sections that allow liquid to flow out may be formed. The "maximum flow cross-section" refers to the flow cross-section with the largest area.

[0076] The hydraulic diameter of the flow section can be determined using conventional methods in the art. In some specific embodiments, the maximum hydraulic diameter of the flow section can be measured as follows: take a microscope image of the flow section, select the largest flow section, calculate the size of each pixel according to the scale in the image or a reference object of known size, and thus calculate the total area A of the flow section and the perimeter P of the flow section. The hydraulic diameter of the flow section is D = 4*A / P.

[0077] In practical use, the combination of the sealing bottle and the piercing cap provided in this application allows the bottle opening of the sealing bottle to be inserted into the cap body of the piercing cap or the piercing cap to be pressed onto the bottle opening of the sealing bottle. The piercing needle 010 pierces the sealing film 140, and a rupture close to the outer contour of the piercing needle 010 can be formed on the sealing film 140. Then, the sealing bottle and the piercing cap are rotated relative to each other, so that the piercing needle 010 can further enlarge the rupture so that the liquid in the sealing bottle can flow out from the liquid guiding hole 020.

[0078] Liquids with high surface tension tend to spread and adhere more easily to solid surfaces, making it difficult for them to flow out of sealed bottles. Similarly, sealing films with high puncture strength are harder to puncture, further hindering the flow of liquid from sealed bottles. To address this issue and ensure smooth flow of liquid from the liquid guide hole 020, the applicant conducted extensive experimental research (as illustrated in the following examples, which demonstrate some key research processes). The results showed that the contact angle between the two sides of the sealing film is a significant influencing factor; specifically, when (θ... in -θ outWhen the angle is ≥15°, it facilitates the smooth flow of liquid from the self-guiding liquid passage 020 inside the sealed bottle. The larger the gap formed by the needle piercing the sealing film, the easier it is to guide the liquid out. When the hydraulic diameter of the maximum flow cross-section formed by the needle piercing the sealing film is ≥0.3mm, it is even more conducive to the smooth flow of liquid from the self-guiding liquid passage 020 inside the sealed bottle.

[0079] In some specific implementations, the hydraulic diameter of the maximum flow cross-section can be 0.30mm, 0.32mm, 0.34mm, 0.36mm, 0.38mm, 0.40mm, 0.42mm, 0.44mm, 0.46mm, 0.48mm, 0.50mm, 0.52mm, 0.54mm, 0.56mm, 0.58mm, 0.60mm, 0.62mm, 0.64mm, 0.66mm, 0.68mm, 0.70mm, 0.72mm, 0.74mm, 0.7 The thicknesses are 6mm, 0.78mm, 0.80mm, 0.82mm, 0.84mm, 0.86mm, 0.88mm, 0.90mm, 0.92mm, 0.94mm, 0.96mm, 0.98mm, 1.00mm, 1.10mm, 1.20mm, 1.30mm, 1.40mm, 1.50mm, 1.60mm, 1.70mm, 1.80mm, 1.90mm, 2.00mm, 2.50mm, 3.00mm, etc., with 0.30mm to 3.00mm being preferred.

[0080] In some specific embodiments, the needle 010 has the same polygonal shape in any cross-section perpendicular to its height direction, and the shape parameter P = N of the polygon. 2 / M, and 2≤P<3, where M represents the number of sides of the polygon and N represents the number of convex vertices of the polygon.

[0081] Sealing films with high puncture strength refer to sealing films with a puncture strength of 5N / mm or higher, such as 5N / mm, 10N / mm, 15N / mm, 20N / mm, 25N / mm, 30N / mm, etc.

[0082] Liquids with high surface tension are those with a surface tension of 40 mN / m or higher. Examples of surface tension values ​​include 40 mN / m, 41 mN / m, 42 mN / m, 43 mN / m, 44 mN / m, 45 mN / m, 46 mN / m, 47 mN / m, 48 mN / m, 49 mN / m, 50 mN / m, 51 mN / m, 52 mN / m, and 53 mN / m. 54mN / m, 55mN / m, 56mN / m, 57mN / m, 58mN / m, 59mN / m, 60mN / m, 61mN / m, 62mN / m, 63mN / m, 64mN / m, 65mN / m, 66mN / m, 67mN / m, 68mN / m, 69mN / m, 70mN / m, preferably 40mN / m~70mN / m.

[0083] The solution proposed in this application allows for smooth and rapid liquid flow even when using sealing films with high puncture strength and liquids with high surface tension. Therefore, it also allows for smooth and rapid liquid flow when using sealing films with low puncture strength or liquids with low surface tension. Thus, the solution provided in this application can effectively achieve smooth and rapid liquid flow for sealing films with different puncture strengths and liquids with different surface tensions, thus broadening its application scenarios. For example, the surface tension of the liquid can be above 40 mN / m or below 40 mN / m, such as 35 mN / m, 30 mN / m, 25 mN / m, 20 mN / m, etc.; the puncture strength of the sealing film can be above 5 N / mm or below 5 N / mm, such as 4.5 N / mm, 4 N / mm, 3.5 N / mm, 3 N / mm, etc.

[0084] Regarding θ in The size is preferably 105°≤θ in ≤135° (e.g., can be 105°, 110°, 115°, 120°, 125°, 130°, 132°, 135°); regarding θ out The size is preferably 80°≤θ out ≤120° (e.g., 81°, 85°, 90°, 95°, 100°, 105°, 110°, 115°, 117°, 120°).

[0085] The number of convex vertices N of the polygon is preferably an integer between 2 < N < 6, specifically 3, 4, or 5.

[0086] The number of sides M of the polygon is preferably an integer between 4 ≤ M ≤ 10, specifically 4, 6, 8, or 10.

[0087] Regarding the statement that "the piercing cap and the sealing bottle can rotate relative to each other and be fixedly connected via the first connecting part and the second connecting part," arbitrarily, one of the first connecting part and the second connecting part includes a rotating protrusion 030, and the other includes a rotating groove 120. When the rotating protrusion is located in the rotating groove, the aforementioned relative movement occurs, causing the rotating protrusion to engage with the rotating groove.

[0088] Specifically, in this embodiment, a rotating protrusion 030 is provided circumferentially on one of the inner side of the cap sidewall 050 and the outer side of the bottle mouth 110. Figures 1a to 4b A rotating protrusion is shown located on the inner side of the cover sidewall 050, and another rotating groove 120 is provided along its circumference. Figure 11 A rotating groove is provided on the outer side of the bottle opening 110, so that when the bottle opening is located inside the cap of the piercing cap, the piercing cap and the sealing bottle can rotate relative to each other circumferentially along the side wall of the bottle opening / the piercing cap, allowing the rotating protrusion to engage in the rotating groove. Preferably, the length of the rotating groove is greater than the length of the rotating protrusion, so that the rotating protrusion can rotate and be fixed in the rotating groove. Preferably, there are two or more rotating protrusions; more preferably, two or more rotating protrusions are evenly distributed on the inner side of the cap side wall or the outer side of the bottle opening, ensuring a stable connection and stable rotation between the sealing bottle and the piercing cap.

[0089] Generally, at least one of the sealed bottles and piercing caps is made of a material with a certain degree of elasticity, such as a polymer. Therefore, only a slight force is needed to directly engage the rotating protrusion into the rotating groove. However, to facilitate use by people with less strength, or to facilitate the application of this solution to sealed bottles and piercing caps made of harder materials (such as metals or non-metals such as glass), preferably, a connecting groove 150 is also provided on the side including the rotating groove (see...). Figure 11 The connecting groove extends from the opening of the sealing bottle / piercing cap to the rotating groove, so that the rotating protrusion can extend into the rotating groove for rotation.

[0090] To facilitate one-handed operation and reduce the force that causes the cap and the sealed bottle to rotate relative to each other, it is preferable to place the piercing needle in the center of the top wall of the cap.

[0091] To facilitate smooth flow of liquid through the guiding orifices, it is preferable to have two or more guiding orifices (e.g., two, three, or four or more). Regarding the size of the guiding orifices, for example, orifices with a diameter of 1–3 mm.

[0092] Regarding the specific location of the liquid guiding hole, as mentioned above, it can be located on the needle 010 or on the top wall 040 of the cap. For ease of manufacturing and to ensure the mechanical strength of the needle, preferably, the liquid guiding hole is located on the top wall 040 of the cap; more preferably, it is located near the concave apex of the needle 010, so that after the cap and the sealed bottle rotate relative to each other, the liquid guiding hole can be well exposed, facilitating the smooth flow of liquid from the sealed bottle through the liquid guiding hole 020.

[0093] Regarding the cross-sectional shape of the needle perpendicular to its height, the cross-sectional shape is a polygon, preferably, the interior angle corresponding to the concave vertex of the polygon is 210° to 330°; for example, the interior angle corresponding to the concave vertex of the polygon can be 210°, 220°, 230°, 240°, 250°, 260°, 270°, 280°, 290°, 300°, 310°, 320°, 330°, etc.

[0094] Preferably, the deviation of the side length of any side of the polygon from the average side length does not exceed ±20%. For example, the deviation can be 20%, 15%, 10%, 5%, 0%, -5%, -10%, -15%, -20%, etc.

[0095] To ensure effortless piercing of the sealing film and facilitate one-handed operation, preferably, the cross-sectional area of ​​the needle gradually decreases from the top wall of the cap to the direction of piercing the cap opening.

[0096] To ensure effective destruction of the sealing film, the maximum width of the needle is preferably 50% to 99% of the inner diameter of the bottle opening. For example, it can be 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 99%, etc. The inner diameter of the bottle opening can be 8 to 15 mm.

[0097] Regarding the specific cross-sectional shape of the needle 010 in the direction perpendicular to its height, it is preferably a quadrilateral star; a pentagonal star; a hexagon, wherein a pair of opposite vertices are concave vertices; or a quadrilateral, wherein one of its vertices is a concave vertices.

[0098] In addition, a sealing gasket is provided on the inner surface of the cap top wall to ensure a good seal between the pierced cap and the sealed bottle after the cap is placed on top, preventing liquid from flowing out through undesigned paths. Based on the above solution, those skilled in the art will understand that the sealing gasket should not cover or block the liquid-guiding hole; specifically, a corresponding through-hole may be provided at the position of the sealing gasket corresponding to the liquid-guiding hole. Preferably, the thickness of the sealing gasket is greater than the distance between the bottle mouth and the cap top wall when the rotating protrusion is engaged in the rotating groove. This ensures a seal while also generating a certain pre-tightening force between the sealed bottle and the pierced cap, guaranteeing a stable connection.

[0099] This application also provides the application of the above-described combination of components in the containment and discharge of liquids with a surface tension of less than or equal to 70 mN / m.

[0100] In addition, based on the above scheme and the experimental steps shown in the following embodiments, those skilled in the art will know that this application also provides a method for using the above-mentioned combination accessory, including: connecting the bottle mouth of the sealing bottle in the combination accessory to the inside of the cap of the piercing cap; and causing the sealing bottle and the piercing cap to rotate relative to each other along the circumference of the bottle mouth / the cap sidewall of the piercing cap.

[0101] Example

[0102] To verify the effect of the sealing film rupture and the sealing film contact angle on liquid outflow, the applicant further conducted the following experiments using the combination of the sealing film bottle and the puncture cap from the above embodiments.

[0103] Experimental steps:

[0104] Step 1: In a 10ml sealed bottle (see structure) Figure 11 The container is filled with a solution at 80% volume.

[0105] Step 2: Seal the bottle opening with heat-press sealing film;

[0106] Step 3: Press the punctured cap onto the bottle opening;

[0107] Step 4: Rotate the protrusion to engage with the rotating groove, causing the piercing cap and the sealing bottle to rotate relative to each other;

[0108] Step 5: Invert the sealed bottle (mouth down) and observe the solution flowing out from the liquid guide hole (2mm diameter hole) under the action of gravity, and record the time (t) when the liquid has completely flowed out.

[0109] After the cap and the sealed bottle rotate relative to each other, a flow-through section is formed between the piercing needle and the sealing film. The liquid inside the bottle flows out from the flow-through section. The method for measuring the hydraulic diameter of the flow-through section is as follows:

[0110] Microscopic images are taken of the flow cross-section. The largest flow cross-section is selected. Based on the scale in the image, the size of each pixel is calculated, thereby calculating the total area A of the flow cross-section, the perimeter P of the flow cross-section, and the hydraulic diameter D of the flow cross-section = 4*A / P.

[0111] The experiments in Table 4 (experiments P1 to P8 and N1 to N8) were conducted using the steps described above. For information on the puncture cap, please refer to Table 1; for information on the sealing film, please refer to Table 2; and for information on the solution, please refer to Table 3.

[0112] Table 1: Information on puncture covers

[0113]

[0114] Table 2: Sealing Film Information

[0115] FM-1 132° 120° 12° FM-2 132° 81° 51° FM-3 132° 117° 15° FM-4 105° 81° 24° FM-5 93° 81° 12°

[0116] Among them, FM1 to FM4 are "PP-aluminum film-PP" composite materials, with a 10-micron thick aluminum film in the middle layer, a 50-micron thick PP film on the IN side (the surface of the sealing film facing the inside of the bottle), and a 50-micron thick PP film on the OUT side (the surface of the sealing film facing the outside of the bottle). The puncture strength is 11 N / mm. FM1 to FM4 are treated as follows to obtain the target contact angle:

[0117] The FM1 OUT surface is treated with plasma (using DBD oxygen plasma discharge, with a discharge power of 50W and a treatment time of 10 minutes);

[0118] FM2 OUT surface is coated with 0.4% hydrophilic oil agent;

[0119] FM3 OUT surface is coated with 0.05% hydrophilic oil agent;

[0120] FM4 IN side is coated with 0.1% hydrophilic oil agent, and OUT side is coated with 0.4% hydrophilic oil agent.

[0121] FM5 is a "PET-aluminum film-PP" composite material. The middle layer is a 10-micron thick aluminum film, the IN side is a 50-micron thick PET film, and the OUT side is a 50-micron thick PP film. The puncture strength is 14 N / mm. The IN side is coated with 0.1% hydrophilic oil agent, and the OUT side is coated with 0.4% hydrophilic oil agent.

[0122] The hydrophilic oil is Covestro oil grade 6087-4.

[0123] Table 3: Information on the liquid inside the bottle

[0124]

[0125] Table 4: Experimental Information

[0126]

[0127]

[0128] The above experimental results show that when using liquids with high interfacial tension and sealing films with high puncture strength, the combination of components used in this application can ensure that the liquid flows out smoothly and quickly.

[0129] Although the embodiments of this application have been described above, this application is not limited to the specific embodiments and application fields described above. The specific embodiments described above are merely illustrative and instructive, and not restrictive. Those skilled in the art, based on the guidance of this specification and without departing from the scope of protection of the claims of this application, can make many other forms, all of which are within the scope of protection claimed in this application.

Claims

1. A combination fitting for a sealed bottle and a puncture cap, wherein, The sealed bottle includes: a bottle body, a bottle mouth, a sealing film disposed on the bottle mouth, and a first connecting part disposed on the outside of the bottle mouth; The puncture cap includes: a top wall of the cap, a side wall of the cap, a puncture needle, a fluid guiding hole, and a second connecting part disposed on the inner side of the side wall of the cap; The sealing film of the sealed bottle has a first contact angle θ on the surface facing the inside of the bottle. in The surface facing outwards from the bottle has a second contact angle θ. out , where (θ in -θ out ≥15°; The piercing needle is positioned on the top wall of the cover, facing the opening of the cover; The fluid guiding hole is formed on the top wall of the cap and / or the needle; When the opening of the sealed bottle is located inside the cap of the piercing cap, the piercing cap and the sealed bottle can rotate relative to each other and be fixedly connected through the first connecting part and the second connecting part; The hydraulic diameter of the maximum flow cross-section formed by the needle piercing the sealing film is ≥0.3mm.

2. The assembly according to claim 1, wherein, 105°≤θ in ≤135°。 3. The assembly according to claim 2, wherein, 80°≤θ out ≤120°。 4. The assembly according to claim 1, wherein, The needle has the same polygonal shape in any cross-section perpendicular to its height, and the shape parameter of the polygon is P = N. 2 / M, and 2≤P<3, where M represents the number of sides of the polygon and N represents the number of convex vertices of the polygon.

5. The assembly according to claim 4, wherein, The interior angles corresponding to the concave vertices of the polygon are 210° to 330°; and / or, The deviation of the side length of any side of the polygon from the average side length shall not exceed ±20%.

6. The assembly according to claim 4, wherein, 2＜N＜6。 7. The assembly according to claim 4, wherein, 4≤M≤10。 8. The assembly according to claim 1, wherein, One of the first connecting portion and the second connecting portion includes a rotating protrusion, and the other includes a rotating groove.

9. The assembly according to claim 1, wherein, The puncture strength of the sealing film is above 5 N / mm.

10. The application of the combination fitting according to any one of claims 1 to 9 in the receiving and discharging of liquids, wherein, The surface tension of the liquid is less than or equal to 70 mN / m.

11. A method of using the combination fitting according to any one of claims 1 to 9, wherein, include: Connect the opening of the sealing bottle in the assembly to the inside of the cap of the piercing cap; The sealed bottle and the piercing cap are rotated relative to each other circumferentially along the bottle opening / the side wall of the piercing cap.

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